If farmer bought a total of 100 sheep and ostriches at an auction and there were 342 legs in total, the farmer bought 29 ostriches, and the remaining 71 animals were sheep.
Let's assume that the farmer bought x ostriches and y sheep.
Since each ostrich has 2 legs, the total number of legs contributed by the ostriches is 2x. Similarly, each sheep has 4 legs, so the total number of legs contributed by the sheep is 4y.
We know that the total number of animals the farmer bought is 100, so we can write:
x + y = 100
We also know that the total number of legs is 342, so we can write:
2x + 4y = 342
Now we can use the first equation to solve for y:
y = 100 - x
Substituting this into the second equation, we get:
2x + 4(100-x) = 342
Simplifying this equation, we get:
2x + 400 - 4x = 342
-2x = -58
x = 29
To learn more about equation click on,
https://brainly.com/question/16625661
#SPJ4
the physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. the distribution of the number of daily requests is bell-shaped and has a mean of 42 and a standard deviation of 4. using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 42 and 50?
Thus, the approximate percentage of lightbulb replacement requests numbering between 42 and 50 is 34%.
Explain about the bell-shaped curve:A bell curve is a form of graph that is used to show how a collection of selected values are distributed; it often has a peak at the centre that tends to be normal, with low and high extremes tapering out rather symmetrically on either side.
Given that:
Mean = 42 with standard deviation of 4.
Now,
If mean = 42,
1 standard deviation (+1σ) above that mean = 42 + 4 =48
1 standard deviation (-1σ) below that mean = 42 - 4 = 38
By the empirical rule 68-95-99.7 rule:
68% of the given normal distribution data lies between -1σ and +1σ: That is between 38 - 48 requests.
And,
In the range 42 - 50 requests (between that mean and +1σ) is half of the given 68% : 68/2 = 34%
Thus, the approximate percentage of lightbulb replacement requests numbering between 42 and 50 is 34%.
Know more about the bell-shaped curve:
https://brainly.com/question/24182600
#SPJ1
Correct question:
the physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. the distribution of the number of daily requests is bell-shaped and has a mean of 42 and a standard deviation of 4. using the empirical rule 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 42 and 50?
Maureen bought 3/4 of a pound of small binder clips and 3/4 of a pound of jumbo binder clips. How much did she spend
If Alice has $50 and spends 4/5 of her money, she spends $40.
A fraction is a mathematical expression that represents a part of a whole or a ratio between two quantities. Fractions are commonly represented using two numbers separated by a horizontal line, where the top number is called the numerator and the bottom number is called the denominator.
Alice spends 4/5 of her money, which is equivalent to 0.8 of her money.
To find out how much Alice spends, we can multiply her total money ($50) by 0.8
= $50 x 0.8
Multiply the numbers
= $40
Therefore, Alice spends $40.
Learn more about fraction here
brainly.com/question/8482939
#SPJ4
I have solved the question in general, as the given question is incomplete.
The complete question is:
Alice has $50 and spends 4/5 of her money. How much does Alice spend?
To decrease by 19% what is the decimal multiplier
Answer:
0.81
Step-by-step explanation:
[tex]\frac{100-19}{100} =0.81[/tex]
Gia made a garden stone shaped like a regular octagon with the dimensions shown. Find the area of the octagon.
5.5 in.
4.6 in.that is the area of the octagon but what is the answer???
Area of the octagon is 85.5591 in².
What is octagon?
The fundamental characteristics of a regular octagon. There are 8 interior angles and 8 sides. Both the length of each side and the measurement of each angle are equal. A regular octagon has a total of 20 diagonals. Each inner angle is 135 degrees in length. This means that (135 x 8) = 1080 degrees is the total of all interior angles. An octagon is a polygon that has 8 sides. An octagon is referred to as a regular octagon if all 8 of its sides are equal in length and all of its angles are equal.
Area of rectangular octagon = 2a² (1 + √2) , where a is side
= 2 * (5.5)² ( 1+√2)
= 2 * 30.25(1+√2)
= 60.5 (1+√2)
= 60.25(1 + 1.4142)
= 60.25 * 2.4142
= 85.5591 in²
Therefore, Area of the octagon is 85.5591 in².
To know more about octagon check the below link:
https://brainly.com/question/27389561
#SPJ9
I NEED HELP ASAP IT'S DUE IN 20MIN
Question 2
The box plot represents the number of tickets sold for a school dance.
A horizontal line labeled Number of Tickets sold that starts at 8, with tick marks every one unit up to 30. The graph is titled Tickets Sold for A Dance. The box extends from 17 to 21 on the number line. A line in the box is at 19. The lines outside the box end at 10 and 27.
Which of the following is the appropriate measure of center for the data, and what is its value?
The mean is the best measure of center, and it equals 19.
The median is the best measure of center, and it equals 4.
The median is the best measure of center, and it equals 19.
The mean is the best measure of center, and it equals 4.
Question 5
A recent conference had 900 people in attendance. In one exhibit room of 80 people, there were 65 teachers and 15 principals. What prediction can you make about the number of principals in attendance at the conference?
There were about 820 principals in attendance.
There were about 731 principals in attendance.
There were about 208 principals in attendance.
There were about 169 principals in attendance.
Question 6
A teacher was interested in the subject that students preferred in a particular school. He gathered data from a random sample of 100 students in the school and wanted to create an appropriate graphical representation for the data.
Which graphical representation would be best for his data?
Stem-and-leaf plot
Histogram
Circle graph
Box plot
Question 7
A random sample of 100 middle schoolers were asked about their favorite sport. The following data was collected from the students.
Sports Basketball Baseball Soccer Tennis
Number of Students 17 12 27 44
Which of the following graphs correctly displays the data?
histogram with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled basketball going to a value of 17, the second bar labeled baseball going to a value of 12, the third bar labeled soccer going to a value of 27, and the fourth bar labeled tennis going to a value of 44
histogram with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled baseball going to a value of 17, the second bar labeled basketball going to a value of 12, the third bar labeled tennis going to a value of 27, and the fourth bar labeled soccer going to a value of 44
bar graph with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled basketball going to a value of 17, the second bar labeled baseball going to a value of 12, the third bar labeled soccer going to a value of 27, and the fourth bar labeled tennis going to a value of 44
bar graph with the title favorite sport and the x axis labeled sport and the y axis labeled number of students, with the first bar labeled baseball going to a value of 17, the second bar labeled basketball going to a value of 12, the third bar labeled tennis going to a value of 27, and the fourth bar labeled soccer going to a value of 44
Question 8
A New York City hotel surveyed its visitors to determine which type of transportation they used to get around the city. The hotel created a table of the data it gathered.
Type of Transportation Number of Visitors
Walk 120
Bicycle 24
Car Service 45
Bus 30
Subway 81
Which of the following circle graphs correctly represents the data in the table?
circle graph titled New York City visitor's transportation, with five sections labeled walk 80 percent, bus 16 percent, car service 30 percent, bicycle 20 percent, and subway 54 percent
circle graph titled New York City visitor's transportation, with five sections labeled walk 40 percent, bicycle 8 percent, car service 15 percent, bus 10 percent, and subway 27 percent
circle graph titled New York City visitor's transportation, with five sections labeled subway 40 percent, bus 8 percent, car service 15 percent, bicycle 10 percent, and walk 27 percent
circle graph titled New York City visitor's transportation, with five sections labeled subway 80 percent, bicycle 20 percent, car service 30 percent, bus 16 percent, and walk 54 percent
Question 9
A college cafeteria is looking for a new dessert to offer its 4,000 students. The table shows the preference of 225 students.
Ice Cream Candy Cake Pie Cookies
81 9 72 36 27
Which statement is the best prediction about the scoops of ice cream the college will need?
The college will have about 480 students who prefer ice cream.
The college will have about 640 students who prefer ice cream.
The college will have about 1,280 students who prefer ice cream.
The college will have about 1,440 students who prefer ice cream.
2. The appropriate measure of center for the given data is the median, and it equals 19.
5. We can predict that there were about 169 principals in attendance at the conference.
6. The best graphical representation for the teacher's data would be a bar graph.
7. A histogram is used to display continuous data, while a bar graph is used to display categorical data.
8. The correct circle graph to represent the data is titled "New York City Visitor's Transportation"
9. We can predict that the college will need about 1440 scoops of ice cream.
Median, bar chart, histogramAnswer 2:
The appropriate measure of center for the given data is the median, and it equals 19. We can determine this from the box plot since the line inside the box represents the median of the data, and the box itself represents the middle 50% of the data. Since the box extends from 17 to 21, we know that half of the data falls below 19 and half above, making it the median. The mean is not a good measure of center for this data because it can be influenced by outliers, which are present in this dataset.
Answer 5:
Since we know that 15 out of 80 people in the exhibit room were principals, we can assume that about 15/80 (or about 0.1875) of the attendees were principals. To estimate the number of principals in attendance, we can multiply this fraction by the total number of attendees:
0.1875 x 900 ≈ 169
Therefore, we can predict that there were about 169 principals in attendance at the conference.
Answer 6:
The best graphical representation for the teacher's data would be a bar graph. A bar graph is a useful way to display categorical data, such as the subject preferences of the students. Each subject can be represented by a bar, with the height of the bar representing the frequency or percentage of students who prefer that subject.
Answer 7:
The correct graph to display the data is a bar graph with the title "Favorite Sport" and the x-axis labeled "Sport" and the y-axis labeled "Number of Students". The bars should be labeled "Basketball" with a value of 17, "Baseball" with a value of 12, "Soccer" with a value of 27, and "Tennis" with a value of 44. A histogram is used to display continuous data, while a bar graph is used to display categorical data.
Answer 8:
The correct circle graph to represent the data is titled "New York City Visitor's Transportation" and has five sections labeled "Walk" at 30%, "Bicycle" at 6%, "Car Service" at 11.25%, "Bus" at 7.5%, and "Subway" at 20.25%. To calculate the percentages, we can divide the number of visitors for each mode of transportation by the total number of visitors (i.e., 300), then multiply by 100% to get the percentage.
Answer 9:
To estimate the number of students who prefer ice cream, we can add up the number of students who chose ice cream, which is 81. Then, we can set up a proportion:
81/225 = x/4000
where x represents the number of students who prefer ice cream out of the total population of 4000. Solving for x, we get:
x = 81 x 4000 / 225 = 1440
Therefore, we can predict that the college will need about 1440 scoops of ice cream.
Learn more on central tendency here https://brainly.com/question/17631693
#SPJ1
can yall help me with this question this would rlly help me out!
Answer:
59.5[tex]cm^{2}[/tex]
Step-by-step explanation:
You have two shape: a square and a triangle
Square:
The area of a square is the sides squared
a = [tex]s^{2}[/tex] The side length is 7 (7 x 7 = 49)
a = [tex]7^{2}[/tex]
a = 49
Triangle:
a [tex]\frac{bh}{2}[/tex] The base times the height divided by 2
The base is 7 and the height is 3.
a = [tex]\frac{7x3}{2}[/tex] = [tex]\frac{21}{2}[/tex] = 10.5
Add the two areas together: 49 + 10.5 = 59.5
Helping in the name of Jesus.
A right triangle has a side length of 10,6 and x. Find x if it is one of the legs show your work
Answer:
The missing side of the right triangle is 8, and it is one of the legs.
Step-by-step explanation:
Step 1: Write down the Pythagorean theorem.
The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides. In equation form, it looks like this:
a^2 + b^2 = c^2
where a and b are the lengths of the legs (the shorter sides) and c is the length of the hypotenuse.
Step 2: Identify which sides are the legs and which is the hypotenuse.
In our triangle, we are given the lengths of two sides, 10 and 6. We don't know which one is the hypotenuse and which one is a leg. However, we can use the fact that the hypotenuse is always the longest side to figure it out. Since 10 is longer than 6, we know that 10 is the hypotenuse.
Step 3: Apply the Pythagorean theorem to find x.
Now that we know which side is the hypotenuse, we can use the Pythagorean theorem to find x. We substitute the values we know into the formula and solve for x:
a^2 + b^2 = c^2
6^2 + x^2 = 10^2
36 + x^2 = 100
x^2 = 100 - 36
x^2 = 64
x = √64
x = ±8
Step 4: Choose the positive value of x.
Since x represents a length of a side of a triangle, it must be a positive value. Therefore, x = 8.
Step 5: Verify that the answer is correct.
We can check that our answer is correct by substituting x = 8 into the Pythagorean theorem and seeing if it holds true:
6^2 + 8^2 = 10^2
36 + 64 = 100
100 = 100
marvin company sells pens ($6) and flashlights ($10). if total sales were $624 and customers bought 7 times as many pens as flashlights, what would be the number of pens sold?
If total sales were $624 and customers bought 7 times as many pens as flashlights, then the number of pens sold is 84.
Let's start by assigning variables to represent the unknown quantities.
Let x be the number of flashlights sold.
Then, since "customers bought 7 times as many pens as flashlights," the number of pens sold would be 7x.
The total sales can be expressed as the sum of the sales of each item:
10x (sales from flashlights) + 6(7x) (sales from pens) = 624
Simplifying this equation
10x + 42x = 624
52x = 624
x = 12
So, the number of flashlights sold is 12.
And the number of pens sold would be 7x = 7(12) = 84.
Learn more about equation here
brainly.com/question/14603452
#SPJ4
which measure of variation is affected most by a few extreme scores? which measure of variation is affected most by a few extreme scores? standard deviation mode range median mean
Standard deviation and median are less affected by extreme scores, while mode is not affected at all since it represents the most frequently occurring value.
The measure of variation affected most by a few extreme scores is the range, as it considers only the difference between the highest and lowest values in a dataset. However, the mean can also be influenced by extreme scores, causing it to deviate from the central tendency. Standard deviation and median are less affected by extreme scores, while the mode is not affected at all since it represents the most frequently occurring value.
learn more about Standard deviation
https://brainly.com/question/23907081
#SPJ11
The measure of variation affected most by a few extreme scores is the range. The range is the difference between the
highest and lowest values in a data set. Extreme scores significantly increase the range, making it a sensitive measure
of variation.
The measure of variation that is affected most by a few extreme scores is the standard deviation.
The reason for this is that the standard deviation is calculated by taking the square root of the sum of squared
deviations from the mean, and the squared deviations from the mean are particularly sensitive to extreme scores.
On the other hand, the mode, range, median, and mean are less affected by a few extreme scores.
The mode is simply the most frequently occurring value in a dataset and is not affected by extreme scores.
The range is the difference between the highest and lowest values in a dataset and can be affected by extreme scores, but only to a limited extent.
The median is the middle value in a dataset, and it is also not affected by extreme scores unless they are extreme
enough to change the position of the middle value.
The mean is the average value in a dataset, and while it can be influenced by extreme scores, its effect is typically less
pronounced than on the standard deviation.
for such more question on range
https://brainly.com/question/2264373
#SPJ11
Consider the equation 2/3×(p-q)=1
Which one of these can be the values of p and q
The values which satisfy the given equation 2/3×(p-q)=1 is given by option b. p= 5/2 , q= 1.
Equation is equal to,
2/3×(p-q)=1
Simplifying the equation multiply both the sides by 3/2we get,
2/3 × (p-q) = 1
⇒2/3 × (p-q) × 3/2 = 1 × 3/2
⇒ (p-q) = 3/2
Now check all the values of p and q which satisfy this equation,
p = 3/2, q = 1
⇒ (p-q) = (3/2 - 1)
⇒ (p-q) = 1/2
It is not equal to 3/2,
So option a) is not a solution.
p = 5/2, q = 1
⇒ (p-q) = (5/2 - 1)
⇒ (p-q) = 3/2
It is equals to 3/2.
So option b) is a solution.
p = 3/2, q = 5/2
⇒ (p-q) = (3/2 - 5/2)
⇒ (p-q) = -1
It is not equal to 3/2,
So option c) is not a solution.
p = 1, q = 1/2
⇒(p-q) = (1 - 1/2)
⇒(p-q) = 1/2
It is not equal to 3/2,
So option d) is not a solution.
Therefore, the only values that satisfies the equation 2/3 × (p-q) = 1 is option b) p= 5/2 , q= 1.
Learn more about values here
brainly.com/question/7103422
#SPJ4
The above question is incomplete , the complete question is:
Consider the equation 2/3 × (p-q) = 1. Which of these can be the values of p and q?
a) p = 3/2, q= 1
b) p= 5/2 , q= 1
c) p= 3/2 , q= 5/2
d) p= 1, q= 1/2
the town mouse and the country mouse
1. The characters in "The Town Mouse and the Country Mouse" are two mice who are cousins. The town mouse is described as elegant, refined, and sophisticated, while the country mouse is simple and unsophisticated.
2. The main idea of the story is that one should be content with their simple life rather than crave for a luxurious life full of dangers and uncertainties.
What is The Town Mouse and The Country Mouse?"The Town Mouse and the Country Mouse" is a fable, a short story that teaches a moral or lesson. It tells the story of two cousins, a town mouse and a country mouse, who visit each other's homes and experience each other's way of life. The town mouse lives in luxury and eats rich food, but is always in danger from the cat, while the country mouse lives a simple life but is safe and content.
3. The sequence of events in the story is as follows:
The country mouse invites the town mouse to visit him in the countryside.The town mouse accepts the invitation and visits the country mouse.The country mouse serves the town mouse simple food, which the town mouse finds unappetizing.The town mouse invites the country mouse to visit him in the town.The country mouse accepts the invitation and visits the town.The town mouse serves the country mouse luxurious food, but they both get scared and run away when the cat appears.The country mouse returns to his simple life, realizing that it's better to be safe and content than to live in luxury but in constant danger.4. Important details in the story include the description of the town and country mice, the differences in their lifestyles, and their reactions to each other's homes. These details are important because they emphasize the theme of the story, which is that it's better to be content with one's simple life than to crave for a luxurious but dangerous life.
5. I think "The Town Mouse and the Country Mouse" is a great story because it teaches an important lesson in a fun and engaging way. The characters are well-developed, and the plot is entertaining, making it easy for readers to understand the message.
6. One question I have about the writing is whether the author intended the story to be a commentary on social class and wealth.
7. A fable is a short story that teaches a moral or lesson. Fables usually feature animals or other non-human characters that can talk and behave like humans.
8. The moral of "The Town Mouse and the Country Mouse" is that it's better to be content with a simple life than to crave for luxury and danger. The story shows that the country mouse is happier and safer in his simple life than the town mouse, who is always in danger despite his luxurious lifestyle. This lesson teaches readers to be satisfied with what they have rather than always craving for more.
Learn more about The Town Mouse and The Country Mouse on https://brainly.com/question/29592899
#SPJ1
town mouse and country mouse are cousins, the town mouse is working hard, (keep up the good work bud,) and the city mouse is relaxing, one day, town mouse was invited to city mouse’s city, they were relaxing, and then, a dog almost killed the mouses.
It costs $50 every two days to rent a bike. The amount y is proportional to the number x of days the bike is rented. a. Find the rate of change (slope) in simplest form. b. Write an equation that represents the situation. c. How many dollars will you pay for renting the bike 6 days?
Therefore , the solution of the given problem of equation comes out to be the cost of renting the bike for six days is $150.
What is equation?Variable words are frequently used in complex algorithms to show consistency between two competing arguments. Academic expressions called equations are used to show the equality of various academic figures. Think on the details connected to those x + 7 proposals. In contrast to another method that involved splitting 12 identical components into two halves, elevating in this case yields b + 7 while building y + 7 and integrating.
Here,
The amount y changes in relation to how many days x the bike is rented; this is known as the rate of change (slope).
The rate of change (slope) is $50 every two days, or $25 per day, because renting a bike costs $50 every two days.
b. The scenario is represented by the equation
=> y = 25x.
c. You can enter x = 6 into the equation to get the price for renting the bike for six days:
=> y = 25(6)
=> y = 150
Therefore, the cost of renting the bike for six days is $150.
To know more about equation visit:
https://brainly.com/question/649785
#SPJ1
A road is inclined at an angle of 4°. After
driving 5,164 feet along this road, find
the driver's increase in altitude. Round to
the nearest foot.
5,164 ft
a=?
Answer:
Step-by-step explanation:
Sin = Opposite/Hypotenuse
(5,164) x sin (4°) =
5164 x .0698 ≈ 360.4472
Round to nearest foot ≈ 360'
in order to determine whether or not there is a significant difference between the hourly wages of two companies, two independent random samples were selected and the following statistics were calculated. company a company b sample size 80 60 sample mean $6.75 $6.25 population standard deviation $1.00 $0.95 refer to exhibit 10-8. the value of the test statistic is . a. 3.01 b. 1.645 c. 2.75 d. .098
The value of the test statistic is approximately 2.84. Its significance can't be determined.
To determine whether or not there is a significant difference between the hourly wages of two companies, we need to conduct a hypothesis test.
The null hypothesis states that there is no significant difference between the hourly wages of the two companies, while the alternative hypothesis states that there is a significant difference.
The test statistic for this hypothesis test is calculated using the formula:
[tex]t = (x1 - x2) / (s1^2/n1 + s2^2/n2)^(1/2)[/tex]
where x1, x2 are the sample means for companies A and B, s1 and s2 are the sample standard deviations for companies A and B, and n1 and n2 are the sample sizes for companies A and B.
Plugging in given values, we get:
[tex]t = (6.75 - 6.25) / [(1^2/80) + (0.95^2/60)]^(1/2)[/tex]
t = 0.5 / 0.1759
t = 2.8437
Without knowing the significance level or the degrees of freedom, we cannot determine whether or not the test statistic is statistically significant.
Learn more about test statistic here:
https://brainly.com/question/14128303
#SPJ11
The value of the test statistic is 2.75.
To determine the test statistic for comparing the hourly wages of two companies, the researcher would need to conduct a two-sample t-test with equal variances.
The formula for the test statistic is:
[tex]t = (\bar x1 - \barx2) / [s_p \times \sqrt(1/n1 + 1/n2)][/tex]
where:
[tex]\bar x1[/tex] and[tex]\bar x2[/tex] are the sample means for Company A and Company B, respectively
[tex]s_p[/tex] is the pooled standard deviation of the two samples, calculated as:
[tex]s_p = sqrt [((n1 - 1) \times s1^2 + (n2 - 1) \times s2^2) / (n1 + n2 - 2)][/tex]
n1 and n2 are the sample sizes for Company A and Company B, respectively
s1 and s2 are the sample standard deviations for Company A and Company B, respectively.
Plugging in the given values, we get:
[tex]t = (6.75 - 6.25) / [\sqrt(((80-1)\times 1^2 + (60-1)\times 0.95^2)/(80+60-2)) \times \sqrt(1/80 + 1/60)][/tex]
[tex]t = 2.75[/tex]
For similar questions on statistic
https://brainly.com/question/15525560
#SPJ11
Briana Ralph is married and claims 2 allowances. Her gross weekly salary is $450. Each week she pays federal, Social Security, and Medicare taxes, $21.20
for medical insurance, and $5.00 for the credit union. What is her net pay?
Answer:
423.8
Step-by-step explanation:
you have to add the taxes and insurance together then subtract it by the gross salary and then you get your answer brainly please
Jamie was working on his math homework with his friend, Kent. Jamie looked at the following problem. −9. 5 − (−8) − 6. 5 He told Kent that he did not know how to subtract negative numbers. Kent said that he knew how to solve the problem using only addition. What did Kent mean by that? Explain. Then, show your work, and represent the answer as a single rational number
The value of the expression as a single rational number is -8.
Kent was likely referring to the idea that subtracting a negative number is the same as adding a positive number. Specifically, to subtract a negative number, we can add the opposite of that number (i.e., the positive version of that number). In this case, we can rewrite the expression as:
= -9.5 - (-8) - 6.5
= -9.5 + 8 - 6.5 (replacing -(-8) with its positive equivalent 8)
= (-9.5 - 6.5) + 8 (grouping like terms)
= -16 + 8 (simplifying)
= -8
Therefore, the value of the expression is -8, which is a single rational number.
To know more about rational number
https://brainly.com/question/24540810
#SPJ4
What is the value of the expression 8w−4j2 when w=0. 25 and j=0. 5?
The value of the expression 8w - 4j² when w = 0.25 and j = 0.5 is 1.
The expression 8w - 4j² is a combination of variables, w and j, and a constant, 8 and 4. In order to evaluate the expression when w = 0.25 and j = 0.5, we substitute these values for w and j in the expression and perform the necessary calculations.
First, we substitute w = 0.25 and j = 0.5 in the expression:
8(0.25) - 4(0.5)²
Next, we simplify the expression by performing the calculations in the parentheses first. Since 0.5² = 0.25, we can simplify 4(0.5)² to 4(0.25) = 1. We can then simplify 8(0.25) - 4(0.5)² to:
= 2 - 1
= 1
Learn more about expression here
brainly.com/question/12467722
#SPJ4
The given question is incomplete, the complete question is:
What is the value of the expression 8w−4j² when w=0. 25 and j=0. 5?
A point that moves on a coordinate line is said to be in simple _________ ___________ if its distance d from the origin at time t is given by either d = a sin ωt or d = a cos ωt.
A point that moves on a coordinate line is said to be in simple harmonic motion if its distance d from the origin at time
t is given by either d = a sin ωt or d = a cos ωt.
Simple harmonic motion, or SHM for short, is a particular kind of periodic motion of a body that results from a dynamic
equilibrium between an inertial force that is proportional to the body's acceleration away from the static equilibrium
position and a restoring force on the moving object that is directly proportional to the size of the object's displacement
and acts towards the object's equilibrium position. If friction or any other energy dissipation is not present, it leads to an
oscillation that is represented by a sinusoid and that lasts indefinitely.
The oscillation of a mass on a spring when it is subject to the linear elastic restoring force specified by Hooke's law is a
good example of simple harmonic motion, which may be used as a mathematical model for many different motions.
The motion has a single resonant frequency and is sinusoidal in time. Simple harmonic motion can be used to simulate
a variety of other phenomena, such as the motion of a simple pendulum, though it is only a good approximation when
the angle of the swing is small; for more information, see small-angle approximation. In order for the model to be
accurate, the net force acting on the object at the end of the pendulum must be proportional to the displacement.
Molecular vibration can also be modelled using straightforward harmonic motion.
for such more question on simple harmonic motion
https://brainly.com/question/26114128
#SPJ11
Which table represents a function?
Answer:
Table 4 represents a function because each x-value corresponds to exactly one y-value.
What is -7(7-2p)=-22+5p
Step-by-step explanation:
-49+14p=-22+5p
-49+22=5p-14p
-27=-9p
p=3
# 15) A boat is heading towards a lighthouse, where Jeriel is watching from a vertical distance of
113 feet above the water. Jeriel measures an angle of depression to the boat at point A to be
8°. At some later time, Jeriel takes another measurement and finds the angle of depression to
the boat (now at point B) to be 52°. Find the distance from point A to point B. Round your
answer to the nearest tenth of a foot if necessary.
the distance between point A and point B is approximately 777.9 feet.
what is distance ?
Distance is a numerical measurement of how far apart two objects or points are from each other. It is a fundamental concept in mathematics and physics, and it can be defined in different ways depending on the context.
In the given question,
Let's denote the distance between Jeriel and point A as x, and the distance between Jeriel and point B as y. We want to find the distance between point A and point B, which we can call d.
From the first measurement, we can draw a right triangle with one leg of length x, another leg of length 113, and an acute angle of 8 degrees. The angle opposite the leg of length 113 is 90 degrees minus 8 degrees, or 82 degrees. We can use tangent to find x:
tan(8) = 113/x
x = 113/tan(8)
x =802.5
From the second measurement, we can draw another right triangle with one leg of length y, another leg of length 113, and an acute angle of 52 degrees. The angle opposite the leg of length 113 is 90 degrees minus 52 degrees, or 38 degrees. We can use tangent to find y:
tan(52) = 113/y
y = 113/tan(52)
y =72.4
Now we can use the Law of Cosines to find d:
d² = x² + y² - 2xy cos(130)
where 130 degrees is the angle between the sides of length x and y. We can simplify this equation and substitute the values we found for x and y:
d² = (802.5)² + (72.4)² - 2(802.5)(72.4) cos(130)
d =777.9
Therefore, the distance between point A and point B is approximately 777.9 feet.
To know more about distance , visit:
https://brainly.com/question/15172156
#SPJ1
Teachers at Arcadia Elementary School asked students to name their favorite desserts.
Ice cream
1
3
Frozen yogurt
2
9
Cookies
1
9
Candy
1
9
Pudding
1
9
Brownies
1
9
Favorite desserts
If there were 99 students voting, how many of them named brownies as their favorite dessert?
Out of 99 students, 11 of them named brownies as their favorite dessert.
What is proportion?
A proportion is a statement that two ratios are equal. In other words, when two ratios have the same relationship between their corresponding values, they are said to be in proportion. Proportions are commonly used in mathematics to solve problems involving equivalent ratios and to scale quantities up or down. They can also be used to represent real-world situations, such as calculating the ratio of ingredients in a recipe or determining the scale of a map.
According to the chart, 1 out of 9 students named brownies as their favorite dessert.
To find the actual number of students who named brownies, you can set up a proportion,
1/9 = x/99
Where x represents the number of students who named brownies.
To solve for x, you can cross-multiply,
9x = 1 × 99
Simplifying,
9x = 99
x = 11
Therefore, out of 99 students, 11 of them named brownies as their favorite dessert.
Learn more about proportion here,
https://brainly.com/question/1496357
#SPJ1
Correct question is "Teachers at Arcadia Elementary School asked students to name their favorite desserts.
Ice cream -1/3
Frozen yogurt - 2/9
Cookies - 1/9
Candy - 1/9
Pudding - 1/9
Brownies - 1/9
If there were 99 students voting, how many of them named brownies as their favorite dessert?"
what does it mean to be 90% confident in this problem? use the definition of confidence level. there is a 90% chance that the confidence interval contains the population mean 90% of all simple random samples of size 8 from this population will result in confidence intervals that contain the population mean the confidence interval contains 90% of all samples
Being 90% confident in a problem means that there is a 90% chance that the confidence interval calculated from a sample contains the true population mean.
In other words, if we take 100 different samples of the same size from the population and calculate a confidence interval for each sample, then we can expect that 90 of those intervals will contain the true population mean.
This is the definition of a confidence level. Therefore, we can say that there is a 90% chance that the confidence interval we have calculated includes the true population mean.
Learn more about mean:
https://brainly.com/question/20118982
#SPJ11
Find the measures of angle and B. Round to the nearest degree.
The measure of angle A and angle B are 30° and 60° respectively.
What is the measure of angle A and angle B?The figure in the image is a right-triangle.
To find the measure of angle A and angle B, we use the trigonometric ratio.
Solving for the measure of angle A:
sinθ = opposite / hypotenuse
opposite of angle A = 8
hypotenuse = 16
Plug in the values
sinθ = 8/16
sinθ = 1/2
θ = sin⁻¹( 1/2 )
θ = 30°
Solving for angle B
cosB = adjacent / Hypotenuse
adjeacent of angle B = 8
Hypotenuse = 16
Plug in the given values
cosB = 8/16
cosB = 1/2
B = cos⁻¹( 1/2 )
B = 60°
Therefore angle A is 30 degrees and angle B is 60 degree.
Learn more about trigonometric ratio here: brainly.com/question/28016662
#SPJ1
let x1, x2, and x3 be independent normally distributed random variables with means, 4, 8, and 12, respectively, and standard deviations of 2, 3, and 4, respectively. a. what is the distribution of x1 x2? b. find the probability that x1 x2 is greater than 16. c. what is the distribution of 3x1 2x2 x3?
a. The distribution of x1 x2 is z1z2 ~ Cauchy(0,1). (b) The probability that x1 x2 is greater than 16 is 0.1056. (c) The distribution of 3x1 + 2x2 + x3, is given as N(38, 29).
What is cumulative distribution function?A probability density function (PDF) expresses the likelihood that a continuous random variable will take a specified value or fall within a predetermined range of values. It is a derivative of the cumulative distribution function (CDF), which is the likelihood that a random variable will have a value that is less than or equal to a certain value.
The CDF is a function that converts every potential value of the random variable to a probability between 0 and 1, and it is defined for both discrete and continuous random variables.
a. Covert the x1 and x3 into standard normal variables by subtracting their means and dividing by their standard deviations:
z1 = (x1 - 4) / 2 ~ N(0,1)
z2 = (x2 - 8) / 3 ~ N(0,1)
The product is thus:
z1z2 ~ Cauchy(0,1)
b. The probability that x1 x2 is greater than 16:
Y / z1 ~ Cauchy(0,1)
Now,
z1 = Y / (z1z2) ~ Cauchy(0,1)
Here, the probability that x1 x2 > 16 is:
P(x1 x2 > 16) = P(Y / z1 > 16 / z1) = P(z1 < -Y / 16) + P(z1 > Y / 16)
= 2 * P(z1 < -Y / 16)
Substituting the value of z1 and Y we have:
P(x1 x2 > 16) = 2 * P(z1 < -16z1z2 / (9)) = 2 * Φ(-16z2 / 3) ≈ 0.1056
Hence, the probability that x1 x2 is greater than 16 is 0.1056.
c) The distribution of 3x1 + 2x2 + x3, is given as:
[tex]3x1 + 2x2 + x3 \~ N(34 + 28 + 12, 3^22^2 + 2^23^2 + 4^2) = N(38, 29)[/tex]
Learn more about cumulative distribution function here:
https://brainly.com/question/30402457
#SPJ1
PLEASE HELP AND SHOW YOUR WORK . I WILL MARK YOU BRAINLIEST IF YOU EXPLAIN.
The approximation of √300 to the nearest integer is 17
What is an integer?An integer is a whole number that can be positive or negative or zero. Examples of integers are 0, -5, 10, 15, 1000. e.t.c. Decimal numbers are not integers.
Since the value of √300 can not give a whole number because 300 is not a perfect square. This means that the answer given will not be an integer. Therefore saying that we should approximate to integer means approximation to whole number.
√ 300 = 17.32. Therefore the approximation of the value of √300 to the nearest integer = 17.
learn more about integers from
https://brainly.com/question/929808
#SPJ1
Find the missing measures in each diagram.
Answer:
X = 65°
Y = 75°
Z = 65°
Step-by-step explanation:
Hello!
Angle Y and the angle measuring 75 degrees are corresponding angles, and corresponding angles are congruent to each other in degree measure.
There is also another set of corresponding angles, and those are Angle Z and Angle X.
Since Angle Y and 75° are corresponding, we can state that Angle Y is also 75°. We can now find Angle Z by subtracting 40° and 75° from 180°. This is because the sum of angles in a triangle is 180°.
Angle Z:180° - 40° - 75°180°-115°65°The measure of Angle Z is 65°. We know that Z and X are corresponding, so X is also 65°.
School: Date Assignment: Directions: Solve the following equation. Write the complete solutions on a 1 whole sheet of paper. 1) y + 6 = 20 2) x-12 = 18 3) c + 15 = 25 4) 5y-2 = 18 5)3 + 2x = 17 6) 5x (12 + 5) = 85 7) 96-4b = 28 8) 5h + (-55) = 20 9)-12 + y + (-25) = 45 10) y-(-18) = 14 +11
You seem to have made a typo.
Answer:
y = 14
x = 30
c = 10
y = 4
x = 7
x = 3
b = 17
h = 15
y = 82
y = 32
This is not an equation and cannot be solved.
Explanation:
To solve each equation, we need to isolate the variable (the letter that we are solving for) on one side of the equation. To do this, we perform the same operation on both sides of the equation until the variable is alone on one side. Here are the steps for each equation:
y + 6 = 20
Subtract 6 from both sides: y = 14
x-12 = 18
Add 12 to both sides: x = 30
c + 15 = 25
Subtract 15 from both sides: c = 10
5y-2 = 18
Add 2 to both sides: 5y = 20
Divide both sides by 5: y = 4
3 + 2x = 17
Subtract 3 from both sides: 2x = 14
Divide both sides by 2: x = 7
5x (12 + 5) = 85
Simplify the left side: 5x (17) = 85
Divide both sides by 85: x = 3
96-4b = 28
Subtract 96 from both sides: -4b = -68
Divide both sides by -4: b = 17
5h + (-55) = 20
Add 55 to both sides: 5h = 75
Divide both sides by 5: h = 15
-12 + y + (-25) = 45
Add 12 and 25 to both sides: y = 82
y-(-18) = 14
Simplify the left side: y + 18 = 14
Subtract 18 from both sides: y = -4
This is not an equation and cannot be solved.
7. Suppose that there is a rumour going around
your school that next year all weekends will
be extended to three days. Initially, on day 0,
five students know the rumour. Suppose that
each person who knows the rumour tells two
more students the day after they hear about
it. Also assume that no-one hears the rumour
more than once.
a) How many people will learn about the
rumour
i) on day 1?
ii) on day 2?
On day 1, each of the 5 people tells 2 more people, so 5 x 2 = 10 people now know the rumor, including the original 5.
a) How many people will learn about the rumour
i) on day 1?a) Let's first consider how the number of people who know the rumor grows each day:
On day 0, 5 people know the rumor.
On day 1, each of the 5 people tells 2 more people, so 5 x 2 = 10 people now know the rumor, including the original 5.
On day 2, each of the 10 people tells 2 more people, so 10 x 2 = 20 people now know the rumor, including the original 5 and the 10 from day 1.
i) Therefore, on day 1, a total of 10 people will know the rumor.
ii) On day 2, a total of 20 people will know the rumor.
to know more about number
brainly.com/question/17429689
#SPJ1
find the equation of the line passing through point (-4,-5) and is parallel to the line 7x-5y=-6
keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above
[tex]7x-5y=-6\implies -5y=-7x-6\implies y=\cfrac{-7x-6}{-5} \\\\\\ y=\stackrel{\stackrel{m}{\downarrow }}{\cfrac{7}{5}}x+\cfrac{6}{5}\qquad \impliedby \qquad \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]
so we're really looking for the equation of a line whose slope is 7/5 and it passes through (-4 , -5)
[tex](\stackrel{x_1}{-4}~,~\stackrel{y_1}{-5})\hspace{10em} \stackrel{slope}{m} ~=~ \cfrac{7}{5} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-5)}=\stackrel{m}{ \cfrac{7}{5}}(x-\stackrel{x_1}{(-4)}) \implies y +5 = \cfrac{7}{5} ( x +4) \\\\\\ y+5=\cfrac{7}{5}x+\cfrac{28}{5}\implies y=\cfrac{7}{5}x+\cfrac{28}{5}-5\implies {\Large \begin{array}{llll} y=\cfrac{7}{5}x+\cfrac{3}{5} \end{array}}[/tex]