The mean of the sample (D) none of these alternatives is correct.
What is a mean?In mathematics, particularly statistics, there are several types of means. Each mean is used to summarize a specific set of data, often in order to better understand the overall value (magnitude and sign) of a given data set.The arithmetic mean, also known as "arithmetic average," of a data set is a central tendency of a finite collection of numbers: specifically, the sum of the values multiplied by the number of values. In two simple steps, we can calculate the mean or average of a data set: add up all of the values to find the sum. Subtract the sum from the total number of values in the data set.Therefore, the mean of the sample (D) none of these alternatives is correct.
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The correct question is given below:
The mean of the sample
a. is always smaller than the mean of the population from which the sample was taken
b. can never be zero
c. can never be negative
d. None of these alternatives is correct.
9p³q¹(3p³ - 5q) please help
After simplifying the given expression 9 p³ q¹ ( 3 p³ - 5 q ), we get 27 p⁶ q - 45 p³q².
We are given that:
9p³q¹(3p³ - 5q)
We need to simplify it:
So, we get that:
= ( 9 p³q¹ × 3 p³ ) - ( 9 p³q¹ × 5 q )
Simplify:
= 27 p³⁺³q - 45 p³q¹⁺¹
Simplifying it, we get that:
= 27 p⁶ q - 45 p³q²
Therefore, after simplifying the expression 9 p³q¹ ( 3 p³ - 5q ), we get 27 p⁶ q - 45 p³ q².
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Please help me out with my homework I am struggling
Answer:
v = 72
Step-by-step explanation:
If the length of both the sides are 12, it means it is an Isosceles triangle which means 2 sides of a triangle are equal. If both sides are equal then both angles will be equal too.
54 and 54
54 + 54 + v = 180
108 + v = 180
v = 72
Question 7(Multiple Choice Worth 1 points)
(02.01 MC)
One of the factors of 8x3 - 800x is
O 8x
Ox+10
Ox-10
O All of the above
The factor of the given expression 8x³ - 800x is (A) 8x.
What are the factors?A factor is a number that is multiplied by another number to produce the desired result. The answer to a multiplication puzzle is a product. Imagine multiplying the factors in a multiplication problem to get the answer. For instance, factors 2 and 4 add up to 8: Just two factors or a great many factors can affect a number.In mathematics, a factor is a number or algebraic expression that divides another number or expression evenly, leaving no remainder. Due to the fact that 12 ÷ 3 = 4 and 12 ÷ 6 = 2, respectively, they are factors of 12 as well.1, 2, 4, and 12 make up the remaining 12 factors.So, 8x³ - 800x:
8x³ - 800x ⇒ take the common8x(x² - 100)As a result, (A) 8x is the expression's factor.
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The correct question is given below:
Question 7(Multiple Choice Worth 1 point)
(02.01 MC)
One of the factors of 8x3 - 800x is
A. 8x
B. x+10
C. x-10
D.All of the above
Divide
266 divided by 15
Hint: The remainder is not a decimal it is the number that is leftover and can no longer be divided
17. The remainder is 11
I showed my work here
https://witeboard.com/537d7850-38f8-11ed-b5a9-6540cf185f3a
Answer:
17, remainder 11
____________
Long Division[tex]Borrow\:6\:from\:the\:ones\:place\\=26\\= 26 - 15(15 \cdot 1)\\= 11\\Drop\:the\:borrowed\:6\\= 116\\= 116 - 105(15 \cdot 7)\\= 11\\\\Using\:the\:numbers\:we\:multiplied\:\:the\:divisor\:by,\\we\:got\:17.\:So\:our\:answer\:would\:be\:17\:with\:a\:remainder\:of\:11.[/tex]
____________
Follow the 3 steps:
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Please help me with my math 60 points
Answer: x=4
HJ=13
JK=5
Step-by-step explanation:
KH=HJ+JK
18=2x+5+3x-7
18=2x+3x+5-7
18=5x-2
5x=20
x=4
HJ=2x+5
HJ=2(4)+5
HJ=8+5
HJ=13
JK=3(4)-7
JK=12-7
JK=5
39.
Gregory planted a lemon tree in his back yard. When he planted the tree, it was 2 feet tall. He noticed that it has been growing
eTool (Desmos) Homework Help
a. Create multiple representations (→y table, graph, and equation) to represent the relationship between the days that ha
tree.
b. If the tree continues growing at this rate, when will it be 6 feet tall? How can you see this in each of the representations?
c. State the possible inputs and outputs of the graph.
Evaluate the expression
Answer:
16
Step-by-step explanation:
Step 1. Plug the numbers into the equation.
Step 2. Solve using PEMDAS
2 ( 6 + 3 ) - 2
2 ( 9 ) - 2
18 - 2
16
SHOW WORK!!!!!!!!!!!!!!!!
AC = x +3, BC= 8, and AB= 2x-11. Find X
ABC are collinear. Point B is between A and C
Answer:
[tex]{ \rm{ac = ab + bc}} \\ { \rm{(x + 3) = (2x - 11) + 8}} \\ { \rm{2x - x = 3 + 11 - 8}} \\ { \rm{x = 6}}[/tex]
when running a half marathon (13.1 miles), it took noah 8 minutes to run from mile marker 1 to mile marker 2, and 19 minutes to run from mile marker 2 to mile marker 4. how long did it take noah to run from mile marker 1 to mile marker 4?
Answer:
27
Step-by-step explanation:
eight concrete specimens are constructed from a new formulation, and the compressive strength of each is measured.
The populace is the concrete produced by a certain procedure. This population is conceptual since the concrete won't exist until the sampling procedure has created it.
What is the difference between tangible and conceptual population?
It is frequently crucial to ascertain the type of population we are working with when asked to perform a sample of it. Sometimes we want to learn more about a lot of different things, like people, apple trees, cereal boxes, etc. Physical things make up the majority of this population. But occasionally, we work with a population that is determined by how well a certain method works (like flipping a coin). We cannot influence that population, but we are aware of its behavior. The population is the broad category of topics about which we are interested in learning more. Since we are dealing with concrete objects that we can touch and interact with, it is more particularly a tangible population.
Similar to the bag of marbles, we have a 50/50 probability of seeing each result. The population does not yet exist with the coin, which is the problem. To get a result, we must flip a coin. Although it is only a notional population, we nonetheless regard "all of the coin flips" as the conceptual population.
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need help with homework
Answer:
a
Step-by-step explanation:
Can Someone please help me with this question? I really need help. It Is Algebra 1 and I'm not very good at it. I'm trying to pass with a B or better.
D. The solution of the quadratic equation using completing the square method is x = 7 ±√3.
What is completing the square method?Completing the square method is one of the methods to find the roots of the given quadratic equation.
In completing the square method, we have to convert the given equation into a perfect square.
The given quadratic equation;
x² - 14x + 46 = 0
collect similar terms together;
x² - 14x = -46
take half of coefficient of "x", square it and add it to both sides of the equation.
(x - 7)² = -46 + 49
(x - 7)² = 3
take square root of both sides
x - 7 = ±√3
add "7" to both sides of the equation
x = 7 ±√3
Thus, the solution of the quadratic equation using completing the square method is x = 7 ±√3.
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Solve for T
1 < 4 - t
-
Answer:
[tex] \sf \large \: t<3[/tex]
Step-by-step explanation:
Let's solve your inequality step-by-step.
1<4−t
Step 1: Simplify both sides of the inequality.
1<−t+4
Step 2: Flip the equation.
−t+4>1
Step 3: Subtract 4 from both sides.
−t+4−4>1−4
−t>−3
Step 4: Divide both sides by -1.
−t/−1 > −3/−1
t<3
Malcolm got his first job. His wage in his first year was $12.50 an hour. In year 2, it was raised to $13.20 an hour. What was the percent increase in his hourly wage between year 1 and year 2?
Answer:
5.6%
Step-by-step explanation:
1) Find the difference between the initial and final values
In this case, a man's hourly wage increased from $12.50 to $13.20. The difference between the hourly wages is $13.20 - $12.50 = $0.70.
2) Divide the difference by the initial value
$12.50 is the initial hourly wage
($0.70 ÷ $12.50) = 0.56
3) Convert the quotient to a percentage
0.56 x 100 = 56%
The man's hourly wage increased by 56%.
Hope this helps, have a great day!
The percentage is the change with respect to the original amount increase in his hourly wage between year 1 and year 2 will be 5.6%.
What is the percentage?The percentage is defined as a given amount in every hundred. It is a fraction with 100 as the denominator percentage is represented by the one symbol %.
As per the given,
The hourly wage in year 1 = $12.50 an hour
The hourly wage in year 2 = $13.20 an hour
Percentage = change / initial
Percentage = (13.20 - 12.50)/12.50
Percentage = 0.7/12.50
Percentage = 0.056
⇒ 0.056 × 100 = 5.6%
Hence "The percentage is the change with respect to the original amount increase in his hourly wage between year 1 and year 2 will be 5.6%".
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Name the property that is used in 5 ⋅ n ⋅ 2 = 0 . Then find the value of n.
Answer: Zero product property
n = 0
=========================================
Explanation:
The zero product property is the idea that if A*B = 0, then either A = 0 or B = 0 or both are zero.
This is because we cannot multiply nonzero values to get a result of zero.
In the equation 5*n*2 = 0, we have 5 and 2 as nonzero, which forces the variable n to be zero. So this is why n = 0 is the only solution here.
-----------------
Extra info:
The zero product property is often used in factoring. For example, x^2+5x+6 = 0 factors to (x+3)(x+2) = 0. Then we set the pieces equal to zero and solve for x
x+3 = 0 leads to x = -3
x+2 = 0 leads to x = -2
Calculate the interquartile range of the data set below: 30, 6, 1, 22, 19, 7, 8
Answer:
IQR = 13
Step-by-step explanation:
first step is to find the median of the data set.
rearrange the data into ascending order. Then the median is the middle value.
1 , 6 , 7 , 8 , 12 , 19 , 30 ← in ascending order
↑ middle
then median = 8
the interquartile range (IQR) is calculated as
IQR = Q₃ - Q₁ ( Q₃ is the upper quartile and Q₁ the lower quartile )
Q₃ is the middle value of the data to the right of the median
12 , 19 , 30
↑ middle
then Q₃ = 19
Q₁ is the middle value of the data to the left of the median
1 , 6 , 7
↑ middle
then Q₃ = 6
IQR = 19 - 6 = 13
nikola competed in an aquathon (swimming and running) competition. he swam at a rate of km/hr and ran at a rate of km/hr for a total distance traveled of km. if he completed the race in hours, how long did he take to complete each part of the race?
Nikola took 2 hours to finish the swimming part
Nikola took 4.5 hours to finish the running part
Define Algebra?A form of arithmetic in which the rules of arithmetic are used to combine letters that represent numbers.
Calculations:
Assume,
[tex]t=time\;in\;hrs\;to\;complete\;swimming\;part[/tex]
[tex]6.5-t=time\;in\;hrs\;to\;complete\;running\;part[/tex]
[tex]d=distance\;in\;km\;that\;he\;swam[/tex]
[tex]73.5-d=distance\;in\;km\;that\;he\;ran[/tex]
Equation of swimming part,
[tex]d=3t[/tex]
Equation of running part.
[tex]73.5-d=15\times(6.5-t)[/tex]
Substitute the value of d in running part equation,
[tex]73.5-3t=15\times(6.5-t)[/tex]
[tex]73.5-3t=97.5-15t[/tex]
[tex]12t=24[/tex]
Therefore,
[tex]t=2[/tex]
[tex]Time\;to\;complete\;summing\;part=t[/tex]
[tex]Time\;to\;complete\;summing\;part=2\;hours[/tex]
[tex]Time\;to\;complete\;summing\;part=6.5-t[/tex]
[tex]Time\;to\;complete\;summing\;part=6.5-2[/tex]
[tex]Time\;to\;complete\;summing\;part=4.5\;hours[/tex]
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If a pharmacist combined 50-ml portions of thre syrups having specific graveties of 1.10, 1.25, and 1.32, what would be the specific gravity of the combined product?
The specific gravity of the combined product is 1.22
Specific gravity is the ratio of the density of a substance to the density of some substance (such as pure water) taken as a standard when both densities are obtained by weighing in air.
Given,
The total quantity of portion= 50 ml
Specific gravities of the three syrups = 1.10,1.25 and 1.32
Then,
The specific gravity of the combined product= [tex]\frac{1.10+1.25+1.32}{3}[/tex]
= 1.22
Hence, the specific gravity of the combined product is 1.22.
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The cost of 2 kg of mushrooms and 2.5 kg of turnips is £8.55. The cost of 3 kg of mushrooms and 4 kg of turnips is £13.10. Work out the cost of a) 1 kg of turnips. b) 1 kg of mushrooms.
The solution to the system of linear equations shows that the cost of 1 kg of turnips is £ 1.1 and the cost of 1kg of mushrooms is £ 2.9.
System of EquationsA system of equations is the given term of math for two or more equations with the same variables. The solution of these equations represents the point of the intersection.
You can solve a system of equations by substitution or adding methods. In the addition method, you eliminate a variable, on the other hand, in the substitution method you replace a variable for the other.
First, you should convert the text of the problem into equations, thus you can write:
2m + 2.5t = 8.55 (1)
3m + 4t = 13.10 (2)
where: m = mushrooms and t = turnips
For solving this question, you can apply the addition method. Thus, you should follow the steps below:
Multiply equation 1 by 3 and equation 2 by -2, thus you can rewrite the equations as shown below6m + 7.5t = 25.65 (1)
-6m -8t = -26.20 (2)
Sum equations 1 and 2 and find t-0.5t = -0.55
0.5t = 0.55
Finding mFrom equation 1, you have 6m+7.5t=25.65 . If t= 11/10, you have
6m + 7.5*11/10 = 25.65 * (100)
600 m + 825 = 2565
600 m = 2565 -825
600 m = 1740
m = 1740/600
m=29/10
m=2.9
From the previous steps, you have the answers for the letter a ( £ 2.9 ) and the letter b ( £ 1.1).
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7. Mrs. Jackson's class reads for a total
of 1,544 minutes one day. Each of her
32 students read the same number of
minutes. How many minutes did each
student read?
Answer:
48.25 minutes
Step-by-step explanation:
Divide 1544/32 to find the time per student
This is due at the end of the day please help
Answer:
Step-by-step explanation:
the answer is 8
8 shipping cost
8 + X = Y
Please help with problem 7
Answer:
D
Step-by-step explanation:
When 7 and 14 are divided by their respective co-ratios, both quotients come out to 2.3333333333333. This means that D forms a porportion.
Answer:
Step-by-step explanation:
The answer is D because 7/14=0.5 and so does 3/6
11=2y-11 what is y ?????
hurryy need help fast!!!!!!
Answer:
11=2y-11
11+11=2y
22=2y
y=22/2
y=11
Answer: I got you!
The answer is below!
11=2y-11
11+11=2y
22=2y
y=22/2
y=11
The graph of y = -x + 2 is negative
over the interval (4, ∞) and positive over the
interval (-∞, 4). What happens on the graph
when x = 4? Explain. MP.2
What happens when x = 4 is that the graph is equal to zero when x = 4.
How to Interpret Graph Intervals?
The information that we have is:
"The graph of y = -1/2x + 2 is is negative over the interval (4, ∞) and positive over the interval (-∞, 4)."
Now, if for values of x smaller than 4 the graph is negative and for values of x larger than 4 the graph is positive, this must be that the graph must crosses the x-axis at some point, then with only that information, we can conclude that the graph is equal to zero when x = 4.
But we could also test it with the equation:
y = -(1/2)*x + 2
if we replace the x with 4.
y = -(1/2)*4 + 2 = -2 + 2 = 0.
Then our previous hypothesis was correct.
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Given h(x) = 4x + 2, find h(5).
Answer:
22
Step-by-step explanation:
4(5)=20
20+2=22
jdjdjdiskfjfiodkfjifofo
Answer:
22 is correct
Step-by-step explanation:
Please help, answer by tomorrow!!!!
Answer the question in the picture:
Answer:
B
Step-by-step explanation:
its the second one
hope this helps :)
Factorise a^2/8 - b^2/18
Step-by-step explanation:
answer=((a/(2× sqrt 2))+(b/(3× sqrt)))((a/(2× sqrt 2))-(b/(3× sqrt 2)))
method-difference of two squares
Solve system of equations.
y=2 x
y=-x+6
The system of equations involving y = 2x and y = -x + 6 has the solution (2 , 4).
A system of linear equations is a set of two or more equations which includes common variables. To solve system of equations, we must find the value of the unknown variables used in the equations that must satisfy both equations.
There are three methods that can be used to solve system of linear equations.
1. Elimination
2. Substitution
3. Graphing
Using substitution method, given two linear equations in x and y,
y = 2x (equation 1)
y = -x + 6 (equation 2)
Since both equations are in the form of y in terms of x ans dome constant, substitute the first equation to the second equation.
y = -x + 6 (equation 2)
2x = -x + 6
Combining the all terms containing the variable x on one side and the constants on the other side of the equality, and solving for x.
2x + x = 6
3x = 6
x = 2
Substituting the value of x in the first equation,
y = 2x (equation 1)
y = 2(2)
y = 4
Writing it as an ordered pair, we got (2 , 4) as the solution of the system of equations involving y = 2x and y = -x + 6.
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While visiting the zoo, Monika has budgeted $10 for lunch at the café. Can she afford a bacon
cheeseburger, large fries and milkshake? Explain.
The total money Monika spent at the cafe to buy a bacon cheeseburger, large fries and milkshake is $9.9.
Given that, while visiting the zoo, Monika has budgeted $10 for lunch at the café.
How to add decimal numbers?To add decimals, write the numbers in a column, and make sure that the decimal points are aligned. To keep the decimal point in your sum, place a decimal point directly below the decimal points in the addends. Align the decimal point in the sum with the decimal point in the addends, and add a zero if necessary.
Cost of a Cheeseburger= $4.75
Cost of a french fries, a large = $1.90
Cost of a milkshake = $3.25.
Now, the total amount spent at the cafe = Cost of a Cheeseburger + Cost of a french fries, a large + Cost of a milkshake
= (4.75+1.90)+3.25
=6.65 + 3.25
=$9.9
Therefore, the total money Monika spent at the cafe to buy a bacon cheeseburger, large fries and milkshake is $9.9.
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"Your question is incomplete, probably the complete question/missing part is:"
While visiting the zoo, Monika has budgeted $10 for lunch at the café. Can she afford a bacon cheeseburger, large fries and milkshake? Explain.
The cost of food items available at cafe are listed below:
Sandwiches Sides Beverages
Hamburger $3.25
Bacon Cheeseburger $4.75
Chicken Fajita Taco $3.50
French Fries, Small $1.55
French Fries, Large $1.90
Onion Rings $2.40
Cole Slaw $1.45
Soft Drink, Small $1.30
Soft Drink, Large $1.65
Milkshake $3.25
Juice $1.80
The ratio of the measures of the three sides of a triangle is 3: 7: 5 , and its perimeter is 156.8 meters. Find the measure of each side.
Answer:
31.36m, 73.2m, 52.3m respectively
Step-by-step explanation: