Answer:
Step-by-step explanation:
Yes, the student is correct. To write a percent as a fraction, we can write the number before the percent symbol as the numerator and 100 as the denominator. For example, 25% can be written as 25/100, which can be simplified to 1/4. This is because percent means "per hundred," so 25% means 25 per hundred, which can be expressed as a fraction with a denominator of 100.
Find the surface area of a square pyramid with side length 1 km and slant height 2 km.
Answer: 5km
Step-by-step explanation:
The formula for Surface area of a square pyramid
SA= [tex]L^{2} + 2Ls[/tex] where L is the length on the bottom and s is the slant height
L=1 km s=2 km
SA = [tex]1^{2} +[/tex] 2(1)(2)
=1+4
=5km
Freemont run club surveyed a random sample of 30 of their members about their running habits
The reasonable estimate would be 25
How to solve for the estimateWe have to solve this using the rule of 3
9 out of 30 members said that they run more than 5 days a week.
We will form the equations
when 9 ran = 30 menbers
when n ran = 84 members
we will then cross multiply
84 x 9 = 30 x n
n = 25.2
When we round this, the reasonable estimate would be 25
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Complete question
Freemont Run Club surveyed a random sample of 30 of their members about their running habits. Of the members surveyed, 9 said that they run more than 5 days a week.
There are 84 Freemont Run Club members.
Based on the data, what is the most reasonable estimate for the number of Freemont Run Club members who run more than 5 days a week?
Exercise: Determine if x = 64 is a solution to the logarithmic equation.
log4(x)=3-log4(x - 63)
Answer:
yes
Step-by-step explanation:
log4(64)=3－0,4*4*4=64
Anna ordered a large pizza with 2 toppings. What was the total cost of her pizza? Write an equation and solve it to find the total cost.
Answer: The cost of a large pizza with 2 toppings depends on the pizza place. Let's say the cost is $15 per pizza, and each additional topping costs $2.
Let t be the number of toppings Anna has on her pizza. Then, the total cost of her pizza can be expressed as:
Total cost = $15 + $2t
Since Anna has 2 toppings on her pizza, we can substitute t = 2:
Total cost = $15 + $2(2)
Total cost = $15 + $4
Total cost = $19
Therefore, the total cost of Anna's pizza with 2 toppings is $19.
The coordinates of ΔRGB are R(‒3, 2), G(3, 4) and B(1, 1). Under a series of transformations, the resulting figure ΔUNA has the following coordinates: U(2, ‒3), N(‒4, ‒3) and A(‒1, ‒1).
Which statement is not true?
RB has the same length as UA.
GB is congruent to AN.
The measure of ∠R is the same as ∠N.
The original triangle ΔRGB is congruent to ΔUNA.
The statement that is not true is (c) The measure of ∠R is the same as ∠N.
From the question, we have the following parameters that can be used in our computation:
The coordinates of ΔRGB are R(‒3, 2), G(3, 4) and B(1, 1). The coordinates of ΔUNA are U(2, ‒3), N(‒4, ‒3) and A(‒1, ‒1).Looking at the above coordinates, we can see that the transformation rule is (x, y) = (-x, -y)
This is a rigid transformation
And so, the side lengths and the corresponding angle measures are equal
However, angles R and N are not corresponding angles
So, the false statement is (c) The measure of ∠R is the same as ∠N.
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Looking at the ping-pong ball toss board below, whats the probability of landing on a white square? (Note the board contains 5 rows of 5 squares.)
The probability of landing on a white square is 4/5.
We have toss board of measurement 5 x 5.
Total squares in board = 25
White square = 20
Black square= 5
So, the probability of landing on a white square
= 20 / 25
= 4/5
Thus, the required probability is 4/5.
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20x+4y=8 in slope-intercept form, simplifying all fractions.
slope = -5, y intercept = 2
The graph is below.
======================================
Work Shown:
20x+4y = 8
4y = 8-20x
4y = -20x + 8
y = (-20x+8)/4
y = -20x/4 + 8/4
y = -5x + 2 is the final answer
slope = -5, y intercept = 2
Two points on this line are (0,2) and (1, -3)
The graph is below. I used GeoGebra to make it, but Desmos is another good choice.
Dr. Suarez, a veterinarian, wants to estimate the average number of
calories a chihuahua typically eats in a day. She'll take a sample of n
chihuahuas and create a 99% confidence interval for the mean daily caloric
intake. She wants the margin of error to be no more than 8 calories. A pilot
study suggests that the daily caloric intake of chihuahuas has a standard
deviation of 30 calories.
Which of these is the smallest approximate sample size required to obtain
the desired margin of error?
Choose 1 answer:
The smallest approximate sample size required to obtain the desired margin of error is b. 180 Chihuahuas
What is the sample size?The sample size is defined as the number of observations used for determining the estimations of a given population. It should be noted that the size of the sample has been drawn from the population. Sampling is the process of selection of a subset of individuals from the population to estimate the characteristics of the whole population.
The sample size will be:
= (2.576 × 26 / 5)²
= 180
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Determine the Y intercept:
The y-intercept of the line is 2.
In the equation y = 9x + 2, x and y are variables that represent the coordinates of any point on the line.
To find the Y-intercept, we need to find the value of y when x equals 0.
When x equals 0, the equation becomes:
y = 9(0) + 2
Any number multiplied by 0 is 0, so the first term drops out and we are left with:
y = 0 + 2
Which simplifies to:
y = 2
Therefore, when x equals 0, y equals 2. This means that the point (0, 2) is on the line. In other words, the line intersects the y-axis at y = 2, which is the Y-intercept of the line.
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Two homebuilders are working to get the windows installed on their homes. Tom uses the formula 42 = 7x + 2 to model the number of windows he is installing on his home and Suzanne uses the formula 37 = 6x + 5 to model the number of windows she is installing on her home. In each formula, x represents the number of days that Tom and Suzanne work on installing windows.
Tom is installing 6 windows each day and Suzanne is installing 6 windows each day as well.
To find the number of days it takes for each homebuilder to install the windows, we need to solve for x in each equation.
Tom's equation: 42 = 7x + 2
Subtracting 2 from both sides:
40 = 7x
Dividing both sides by 7:
x = 5.71 ≈ 6
So it will take Tom approximately 6 days to install the windows on his home.
Suzanne's equation: 37 = 6x + 5
Subtracting 5 from both sides:
32 = 6x
Dividing both sides by 6:
x = 5.33 ≈ 6.
So it will take Suzanne approximately 6 days to install the windows on her home.
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Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC = 65
and DC = 6, what is the length of BC in simplest radical form?
Answer: =
B
65
6
C
Submit Answer
Applying the leg rule, the length of BC in simplest radical form is: x = x = √390
How to Apply the Leg Rule?The leg rule is used to find missing lengths in a right triangle when an altitude intersects the hypotenuse and form segments.
The leg rule is given as:
Hypotenuse / leg = leg / part
Thus, using the image given, we have:
Hypotenuse (AC) = 65
Part (DC) = 6
Leg = x
Plug in the values:
65 / x = x / 6
Cross multiply:
x * x = 6 * 65
x² = 390
x = √390
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AYOde deposit 600 at the end of each quarter for 15 year in a bank whose annual interest rate is 12% and compounding is done at each deposit
Find the total with of the account 60th deposit
Find the accumulate interest
The account's total value is $498,174.72.
The total interest paid is $174,174.72.
To solve this problemWe can utilize the calculation for the future value of a compound interest annuity to resolve this issue:
FV = P*(((1 + r/n)(n*t))-1) / (r/n).
where
FV is the future value of the annuityP is the periodic payment deposit, which is 600 in this caser is the annual interest rate, which is 12%n is the number of times the interest is compounded per year, which is 4 since the deposits are made quarterlyt is the total number of periods, which is 60 since there are 15 years and 4 deposits per yearWhen we enter the values, we obtain:
FV = 600 * (((1 + 0.12/4)^(4*60)) - 1) / (0.12/4) = 498,174.72
After the 60th deposit, the account's total value is $498,174.72.
We can deduct the total amount deposited from the account's total value to calculate the cumulative interest:
Added interest is calculated as follows: FV - (P * t * n) = 498,174.72 - (600 * 60 * 4) = 174,174.72
Therefore, the total interest paid is $174,174.72.
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Luke is shipping another toy that has a volume of 34 cubic feet. The box he will use has a base of 15 square feet and a height of 3 feet. The rest of the box will be filled with packing material. B. What is the volume, in cubic feet, of the packing material Luke will need? Show or explain all your work.
The volume of the packing material that luke will need is: 11 cubic feet
How to find the volume of the box?The formula for the volume of a box is expressed as:
V = length * width * height
Now, we are given:
Area of base = 15 square feet
height = 3 feet
Thus:
Volume of box = 15 * 3 = 45 cubic feet
If he is going to ship a toy that is 34 cubic feet, then it means that:
Volume of packing material Luke needs = 45 - 34 = 11 cubic feet
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Team People on Each Team A 7 B 3 C 7 D 5 E 6 F 7 G 8 H 5 I 3 J 5 K 7 Think about a line plot using the data from the table. Which statement is true?
Think about a line plot using the data from the table. Which statement is true?
A. The greatest value with a dot above it is 11.
B. There will be 11 dots in total.
C. There will be 4 more dots above 7 than above 8.
D. There will be 5 dots above 7.
Statement " There will be 5 dots above 7" is true. Therefore, option D is the correct answer.
A line plot is an effective way to visualize and compare data in a table. In this case, the line plot would show the total number of people on each team, with dots representing the values.
The greatest value in the table is 11, but this would not be represented with a dot in the line plot. There will be 11 dots in total, representing the 11 teams listed in the table.
There will be 4 more dots above 7 than above 8, since there are 4 teams with 7 people on each team and only 3 teams with 8 people on each team.
Finally, there will be 5 dots above 7, since there are 5 teams with 7 or more people on each team.
Therefore, option D is the correct answer.
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Question 6
A square is placed within a rectangle. Find the area of the shaded region.
Select one:
O
✪
✪
O
559 ft²
640 ft²
721 ft²
604 ft²
32 ft
19A
9 ft
20 ft
The area of the shaded region is 559 ft².
How to find the area of the shaded region?In order to find the area of the shaded region, we will subtract the area of the square from the area of the rectangle. That is:
area of the shaded region = area of rectangle - area of square
area of the shaded region = (32 * 20) - (9 * 9)
area of the shaded region = 640 - 81
area of the shaded region = 559 ft²
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Complete Question
See attached image
in how many ways can a student choose four questions from a question paper that contains six questions if
a. Question No. 1 is compulsory
b. Question No. 2 should not be chosen
c. There is no restriction on any of the questions
The student can choose four questions from a question paper that contains six questions as follow:
a. 10 ways.
b. 5 ways.
c. 15 ways.
How to choose how many ways can a student choose four questions?Combination is a way of selecting items from a collection where the order of selection does not matter.
a. If Question No. 1 is compulsory, then the student can choose three more questions from the remaining five. That is:
5C3 (i.e. 5 combination 3) ways = 10 ways.
b. If Question No. 2 should not be chosen, then the student can choose four questions from the remaining five. That is:
5C4 ways = 5 ways.
c. If there is no restriction on any of the questions, the student can choose any four questions from the remaining six. That is:
6C4 ways = 15 ways
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Given: ABCD is a trapezoid,
AD=10, BC=8,
CK-altitude of ΔACD=30
Find: Area of ABCD
The area of the given trapezoid is 270 square units.
A trapezoid is a four-sided geometric shape that has two parallel sides (called the bases) and two non-parallel sides (called the legs). The area of a trapezoid is the amount of space inside the shape and can be calculated using the formula:
A = (a + b)h/2
Where:
a and b are the lengths of the two parallel sides of the trapezoid, and
h is the height (perpendicular distance) between the two parallel sides.
The area will be calculated as,
A = ( 10 + 8) x 30 /2
A = 270 square units
Therefore, the area is 270 square units.
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Let's say you wanted to make a flute from one-inch PVC pipe. If the lowest desired note is C5 on the Equal Temperament Scale (523.25 Hz), what length should it be cut?
The length the one-inch pipe should be cut to make a flute with a lowest desired note of 523.25 Hz, based on the acoustic length formula is 12.9 inches
What is the acoustic length?The acoustic length is the length obtained from the sum of the bore length and the corrections at the foot and the sound hole.
The frequency of the lowest note = 523.25 Hz
Whereby the frequency of the lowest note = The fundamental frequency
The acoustic length formula for finding the length of the pipe, L, can be presented as follows;
L = (v/(2·f)) × √(1 + 4·A²/v²)
Where;
L = The length of the pipe
f = The frequency = 523.25 Hz
A = The cross-sectional area of the pipe = π × 1.315²/4 ≈ 1.36 in²
v = The speed of sound ≈ 343 m/s ≈ 13503.9 in/s
L = (v/(2·f)) × √(1 + 4·A²/v²)
L = (13503.9/(2×523.25)) × √(1 + 4×1.26²/13503.9²) ≈ 12.9
The length of the pipe is about 12.9 inches
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The table shows the number of bikes sold by a company from January to June of last year.
The mean number of bikes sold by the company from January to June was 146.17.
What is the mean number of bikes sold?
The mean, also called average refers to data set found by adding all numbers in the data set and then dividing by the number of values in the set.
Given data: 110 158 112 176 119 202
The total number of bikes sold is:
= 110 + 158 + 112 + 176 + 119 + 202
= 877
The number of months (Jan - Jun) = 6
The mean number of bikes sold will be:
= Ef/x
= 877 / 6
= 146.166666667
= 146.17
Full question "The table shows the number of bikes sold by a company from January to June of last year.
Find the mean number of bikes sold by the company from January to June.
January February March April May June
110 158 112 176 119 202"
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find the equation of the line best fit for the following data. pls explain im kind of lost lol
The equation of the line of best fit for the set of data is given as follows:
y = 4.24773x - 0.32726
How to find the equation of linear regression?To find the regression equation, which is also called called line of best fit or least squares regression equation, we need to insert the points (x,y) in the calculator.
From the table in this problem, the points are given as follows:
(0.9, 3.51), (1.7, 6.61), (3, 12.27), (0.1, 0.15), (2.3, 9.59), (1.3, 5.35), (0.5, 1.65), (2.1, 8.8).
Inserting these points into a calculator, the line of best fit is given as follows:
y = 4.24773x - 0.32726
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if f(x)=-4x-2 is vertically tranfered up 6 units to g(x), what is the y intercept of g(x)
The y-intercept for the function g(x) is 4.
The y-intercept of a function is a point where the line crosses the y-axis. The linear function can be given as below.
f(x) = mx+n
Where m is the slope of the line and n is a real number and y-intercept of the line.
The given function is f(x)=-4x—2.
The function is vertically translated 6 units up to g(x).
The y-intercept of the function f(x) is -2. Then the y-intercept for the function g(x) can be given as below.
y-intercept g(x) = -2+6
y-intercept g(x) = 4
Hence, the y-intercept for the function g(x) is 4.
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ayer compre 3/4 kg de papas y hoy 1/2 kg cuantos kg tengo en total
This data gives the length of the radius, in feet, of several circles.
Length (ft): 12, 316, 12, 12, 38, 38, 316, 12, 316, 716
Create a line plot to display this data.
To create a line plot, hover over each number on the number line. Then click and drag up to plot the data.
Radius of Circles
1/16
1/8
3/16
1/4
5/16
3/8
7/16
1/2
Length (ft)
0
1
2
3
4
5
6
7
8
9
10
Answer: on 1 = 0
on 2 = 0
on 3 = 3
on 4 = 0
on 5 = 0
on 6 = 2
on 7 = 1
on 8 = 4
Step-by-step explanation:
As the first, second, fourth and fifth do not have any numbers we will skip to the next number on the number line.
1/16 = 0
1/8 = 0
3/16 = 3
1/4 = 0
5/16 = 0
3/8 = 2
7/16 = 1
1/2 = 4
Two fair dice are rolled. What is the probability that the sum of the two numbers on the dice will be greater than 9?
A)11/12. B)5/6. C)1/12. D)1/6
Answer:
There are 36 possible outcomes when two dice are rolled (6 outcomes for the first die and 6 outcomes for the second die). To find the probability that the sum of the two numbers on the dice will be greater than 9, we need to count the number of outcomes where the sum is greater than 9.
The possible outcomes where the sum is greater than 9 are (4,6), (5,5), (5,6), and (6,5), for a total of 4 outcomes. Therefore, the probability of getting a sum greater than 9 is 4/36 or 1/9.
Answer: C) 1/12.
Find (v) x (w) if ||v||=8, ||w||=12, and the angle between v and w is 60 degrees
The product of two given vectors is 48.
Given that, |v|=8, |w|=12 and the angle between v and w is 60 degrees.
We know that, |a|·|b|=|a|×|b|×cosθ.
Here, |v|·|w|=8×12×cos60°
= 96× 1/2
= 48
Therefore, the product of two given vectors is 48.
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Jada is designing a study to determine whether mold grows faster in tap water or bottled water. To do this she compares growth rate of mold growing in a glass of tap water to the growth rate of mold growing in a glass of bottled water.
What type of study is Jada designing?
How could her design be improved to collect date that would be better for answering question of interest?
Jada is directing a comparative analysis to identify whether mold thrives faster in tap water or bottled water.
How to improve her designTo upgrade her design and procure data that would be more viable for addressing the question of interest, Jada might reflect on the following:
Randomized Controlled Trial (RCT): Preferably of just contrasting the rate of growth of mold in tap water versus bottled water in a glass, Jada could arbitrarily allote separate glasses to either tap water or bottled water categories.
Replicates and Sample Size: Jada may utilize several copies for each type of water to escalate the probabilistic force of her study.
Control Group: Jada should integrate a control group in her study, where no water is integrated into the glass.
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A farmer saw some chickens and pigs in a field. He counted 53 heads and 138 legs. Determine exactly how many chickens and pigs he saw.
The number of chickens and pigs the farmer saw on the field are 37 and 16 respectively.
How many chickens and pigs he saw?Let
Number of chickens = x
Number of pigs = y
x + y = 53
2x + 4y = 138
From (1)
x = 53 - y
Substitute x = 53 - y into (2)
2x + 4y = 138
2(53 - y) + 4y = 138
106 - 2y + 4y = 138
- 2y + 4y = 138 - 106
2y = 32
divide both sides by 2
y = 32/2
y = 16
Substitute y = 16 into
x + y = 53
x + 16 = 53
x = 53 - 16
x = 37
Therefore, there are 37 chickens and 16 pigs respectively.
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Huai takes out a $3700 student loan at 6.8% to help him with 2 years of community college. After finishing the 2 years, he transfers to a state university and borrows another $12,00 to defray expenses for the 5 semesters he needs to graduate. He graduates 4 years and 4 months after acquiring the first loan and payments are deferred for 3 months after graduation. The second loan was acquired 2 years after the first and had an interest rate of 7.4%. Find Huai's monthly payment when regular payments begin. Calculate the monthly payment on the loan (community college). Round your answer to two decimal places, if necessary.
The monthly payment on loan 1 (community college) is :
Part: 0 / 30 of 3 Parts Complete
Please provide the honest answer here I can't do it and I need your help, okay thank you
To calculate the monthly payment for each loan, we need first to calculate the total amount
Huai's monthly payment for the community college loan is $89.72 and $235.35.
To calculate the monthly payment for each loan, we need first to calculate the total amount borrowed and the total interest paid for each loan.
For the first loan
Total amount borrowed = $3700
Total interest paid = $3700 x 0.068 x (4 + 4/12 + 3/12) = $1,271.12
Total amount repaid = $3700 + $1,271.12 = $4,971.12
To find the monthly payment, we can use the formula for a loan payment
P = (r(PV))/(1-(1+r)⁻ⁿ)
Where P is the monthly payment, r is the monthly interest rate, PV is the present value of the loan, and n is the total number of payments.
For the first loan, r = 0.068/12, PV = $3700, and n = 48 (4 years x 12 months/year). Substituting these values into the formula, we get
P = (0.068/12 * $3700)/(1-(1+0.068/12)⁻⁴⁸) = $89.72
Therefore, the monthly payment on the first loan is $89.72.
For the second loan
Total amount borrowed = $12,000
Total interest paid = $12,000 x 0.074 x (3/12) = $222.00
Total amount repaid = $12,000 + $222.00 = $12,222.00
The second loan was acquired 2 years after the first, so the total repayment period is 5 x 12 - 2 x 12 - 3 = 51 months.
Using the same formula as before, but with r = 0.074/12, PV = $12,000, and n = 51, we get
P = (0.074/12 * $12,000)/(1-(1+0.074/12)⁻⁵¹) = $235.35
Therefore, the monthly payment on the second loan is $235.35.
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The minivan depreciates $3,000 in the first year. Write either a linear or exponential function to represent the value of the car x years after it was sold.
Answer:
Step-by-step explanation: However, say that the car loses 50% of its value every year. This means that if you originally bought a car for 2,000 dollars in 2015, in 2016 it would be world 2,000/2=1,000, 1,000/2=500 the year after that, and so on. We can try to put this into a linear function, but it's hard to put it into one equation because we're not subtracting or adding to the cost of the car by a specific amount each year. If we had our equation as y=-0.5*x+2000, this wouldn't work because it's adding to the original amount, not multiplying. However, if we used an exponential equation such as y=b(m^a), with y representing the end cost, b representing the starting cost, m representing the amount multiplied per year, and a representing the number of years. This works because we start with a value, and multiply it by an amount each year. Since 50%=0.5, we plug that into m to get y=2,000(0.5^a). Therefore, this works well here. If the minivan were to depreciate by 3,000 every year, starting at $29,248, this means that we first have to find out what we multiply by 29,248 by the first year to subtract 3,000. As, after one year, the value is 29,248-3,000=26,248, we have 26,248=29,248(m^1). Therefore, we can divide 29,248 by both sides to get around 0.9 as our answer form. Thus, our equation is y=29,248(0.9^a). This type of equation would not work if we subtracted an amount every year because we're not multiplying by the same amount then. For example, if a toy was valued at 3$ and gained a value of one dollar every year, we could multiply the toy by 4/3 the first year to get 4, but the next year we wouldn't get 5.
Question
Find the equation of the line shown.
-4-3
9 10
3
2
O-
27
-5
1 2 3 4
The equation of the line for the given points is y= (1/2)x - 3.
An equation of a line can be written in slope-intercept form, which is:
y = mx + b
where:
y and x are the coordinates of any point on the line.
m is the slope of the line (the rate at which y changes with respect to x).
b is the y-intercept of the line (the y-coordinate of the point where the line intersects the y-axis).
The slope of the line is calculated as,
m = ( y₂ -y₁) / (x₂ - x₁)
m = ( -2+1) / (2-4)
m = 1/2
The y-intercept is calculated as,
y = mx + c
-1 = (1/2)x 4 + c
c = -3
The equation of the line will be,
y = mx + c
y = (1/2)x - 3
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