is the following graph a function?

A. yes
B. no​

Answer:

75.4

Step-by-step explanation:

v = pi * r^2 * h

v = 3.14 * 4 * 6

v= 3.14 * 24

v= 75.36 m^3

to the nearest tenth is 75.4 m^3

The type of sampling used in this scenario is a multistage cluster sampling. In this type the population is divided into clusters or groups.

In multistage cluster sampling, the population is divided into clusters or groups, and a sample is taken from each cluster. In this case, the clusters are the states, and a simple random sample of four states is selected.

Within each selected state, another level of sampling occurs where two colleges or universities are randomly selected from each state. This forms the second stage of sampling.

Finally, from each of the eight selected colleges or universities, a simple random sample of 20 undergraduates is taken. This forms the third stage of sampling.

By combining these stages, a final sample of 160 undergraduates is obtained.

Multistage cluster sampling is commonly used when the population is large and geographically dispersed. It offers a practical approach to obtain a representative sample by selecting clusters at different stages, which helps to reduce time, cost, and logistical challenges.

Learn more about multistage cluster sampling here:

https://brainly.com/question/4542698

#SPJ11

Answer:

y + 4x + 2

Step-by-step explanation:

The Mae takes the absolute values of the forecast errors to ensure they don't cancel each other out.

By considering only the magnitude of the errors, the MAE (Mean Absolute Error) provides a measure of the average deviation between forecasts and actual values.

To ensure that forecast errors don't cancel each other out, the Mean Absolute Error (MAE) calculation involves taking the absolute values of the errors. The MAE is a commonly used metric to measure the accuracy of a forecasting model.

Forecast errors represent the differences between predicted values and actual values. These errors can be positive or negative, depending on whether the forecast overestimates or underestimates the actual value. By taking the absolute values, the direction of the error is disregarded, and only the magnitude of the deviation is considered.

By summing up the absolute values of all the forecast errors and dividing by the number of observations, the MAE provides an average measure of how far the forecasts deviate from the actual values. It allows for the evaluation of the average absolute magnitude of the errors without considering their direction.

In summary, the Mean Absolute Error (MAE) takes the absolute values of the forecast errors to ensure they don't cancel each other out. This approach allows for a measurement of the average deviation between forecasts and actual values by considering only the magnitude of the errors.

Learn more about Mean absolute error here:

https://brainly.com/question/30404541

#SPJ11

Step-by-step explanation:

A (-2,1) B (3,4) find the gradient of the line

m = -1

we know that=

m/y2 - y 1) / (x2-1)

= (-4-1)/{3-(-2)

=-5/(3+2)

=5/5

= 1

As per the formula of surface area of cube, the length of the cube is 5.45 meters.

The general formula to calculate the surface area of the cube is calculated as,

=> SA = 6a²

here a represents the length of cube.

Here we know that  the side of a cube with a surface area of 180 square meters than a cube with the surface area of 120 square meters.

When we apply the value on the formula, then we get the expression like the following,

=> 180 = 6a²

where a refers the length of the cube.

=> a² = 30

=> a = 5.45

To know more about Surface area here.

https://brainly.com/question/29298005

#SPJ4

The Braille system uses two vertical columns of three dots each to represent characters. There are 8 possible combinations for each column, giving a total of 64 distinct Braille characters.

The Braille system of representing characters was developed by Louis Braille in the early nineteenth century. This system is used by blind people and consists of raised dots that represent characters. The positions for the dots are selected from two vertical columns of three dots each. At least one raised dot must be present to represent a character.

To determine the number of distinct Braille characters possible, we need to consider the number of ways we can arrange the dots in the two vertical columns. Each column has three dots, and we need to choose which of these three dots to raise to represent a character. This gives us a total of 2^3 = 8 possible combinations for each column.

Since we have two columns, we can multiply the number of possible combinations for each column to get the total number of distinct Braille characters. This gives us 8 x 8 = 64 possible characters.

Learn more about blind people here:

brainly.com/question/30490877

#SPJ11

Answer:

60

Step-by-step explanation:

3.92 = (6.56/100) * _

To solve for _, we can multiply both sides by 100:

100 * 3.92 = (6.56/100) * _

100 * 3.92 = 6.56 * _

_ = (100 * 3.92) / 6.56

Therefore, _ = 60.

Answer: 60

Step-by-step explanation:

To calculate the probability that the sample mean would differ from the true mean by less than 0.6 dollars, we need to use the Central Limit Theorem (CLT) since the sample size is large (n = 107).

According to the CLT, the sampling distribution of the sample mean will be approximately normally distributed, regardless of the shape of the original population distribution, when the sample size is sufficiently large.

Given that the variance of the cost of 55 gallons of ice cream is 3636 and the sample size is 107, we can calculate the standard deviation of the sampling distribution (also known as the standard error) using the formula:

Standard Error (SE) = sqrt(Variance / Sample Size)

SE = sqrt(3636 / 107)

SE ≈ 5.960

Next, we want to find the probability that the sample mean would differ from the true mean by less than 0.6 dollars. This can be interpreted as finding the probability within a certain range around the mean in a normal distribution.

To calculate this probability, we need to standardize the range by converting it into a z-score.

Z = (X - μ) / SE

where X is the value of interest (0.6 dollars in this case), μ is the true mean (3636 dollars), and SE is the standard error (5.960 dollars).

Z = (0.6 - 3636) / 5.960

Z ≈ -607.073

Since the z-score is extremely negative, the probability of the sample mean differing from the true mean by less than 0.6 dollars is almost 0.

To know more about refer here

https://brainly.com/question/31828911#

#SPJ11

The given system of equations can be written as a vector equation (7x1 + x2 - 3x3) = 7 and as a matrix equation = , where A = [7 1 -3 3 2 2] and B = [7 0].

An equation is a mathematical statement that expresses the equality of two expressions. It usually consists of two expressions separated by an equals sign (=). The expressions may contain numbers, variables, and operations, such as addition, subtraction, multiplication, and division. The solution of an equation is the value of the variable that makes the equation true.

Vector equation:

(7x1 + x2 - 3x3) = 7

Part 2
Write the system as a matrix equation. Select the correct choice below and fill in any answer boxes to complete your choice.

Matrix equation:

=

A =

[7 1 -3
3 2 2]

B =

[7
0]

Conclusion:

The given system of equations can be written as a vector equation (7x1 + x2 - 3x3) = 7 and as a matrix equation = , where A = [7 1 -3 3 2 2] and B = [7 0].

To know more about equation click-
http://brainly.com/question/2972832
#SPJ1

The value of the expression  \(\frac{27^{\frac{1}{3}b} }{9^{ \frac{1}{2} a} }\)  is 1/9.

Exponent rules are a set of mathematical properties that help simplify expressions with exponents and make it easier to manipulate them in algebraic operations.

The fractional exponent or power rule:

The rule states that for any real numbers a and b, and any positive integer n, the expression \(a^{\frac{1}{n} }\) is equal to the nth root of the fraction a/b. That is:   \(a^{\frac{1}{n} }\)  = \(\sqrt[n]{a}\)

Here we have

=>  \(\frac{27^{\frac{1}{3}b} }{9^{ \frac{1}{2} a} }\)  

Using the fomrula, \(a^{\frac{1}{n} }\)  = \(\sqrt[n]{a}\)

=> \(27^{ \frac{1}{3} b} = (\sqrt[3]{27})^{b}\)  

As we know 27 = 3³  

=> \((\sqrt[3]{27})^{b} = (\sqrt[3]{3^{3} })^{b} = 3^{b}\)  

=> \(9^{ \frac{1}{2} a} = (\sqrt {9})^{a}\)    

As we know 9 = 3²

=> \((\sqrt {9})^{a} = [\sqrt{3^{2} } ]^{a} = 3^{a}\)    

Hence the expression will be

=>  \(\frac{27^{\frac{1}{3}b} }{9^{ \frac{1}{2} a} } = \frac{3^{b} }{3^{a} }\)

=>  \(\frac{3^{b} }{3^{a} } = \frac{1}{3^{a-b} }\)

=>  \(\frac{1}{3^{a-b} } = \frac{1}{3^{2} }\)

=>  \(\frac{1}{3^{2} } = \frac{1}{9}\)

Therefore,

The value of the expression  \(\frac{27^{\frac{1}{3}b} }{9^{ \frac{1}{2} a} }\)  is 1/9.

Learn more about Exponent rules at

https://brainly.com/question/5497425

#SPJ1

Answer:

3x+6

Step-by-step explanation:

This problem is quite simple, all you need to do is you multiply the 3 on the outside of the parenthesis times x, which results in 3x, next multiply 3 times 2 and it becomes a six.

Answer:

6a+17

Step-by-step explanation:

4a+8+2a+9= 6a+17

Answer:

6a + 17

Step-by-step explanation:

Added like terms. Don't know if this is the answer you're looking for :^

Answer:

A) 5

Step-by-step explanation:

Distance between two points is calculated as:

Step 1: locate the coordinate points:

Point 1- (x₁ , y₂) = (-5, -2)

Point 2-(x₁ , y₂)= (-9, -5)

Formula to find distance between two points = √(x₂−x₁)² + (y₂−y₁)²

Step 2: input the values

√(−9− −5)² + (−5− −2)²

= √(−4)² + (−3)²

=√16 + 9

= √25 ........ square root of 25

= 5

Distance between points (-5, -2) and (-9, -5) is 5

work by Tolaosunrinde

Answer:

he earned 96$ in commissions

Step-by-step explanation:

Sum of roots = - 18

Product of roots = - 8 - 3 =-11

Therefore, y= x^2 + 18x - 11

Answer:

if the question says if you're drawing a line to separate positive and negative then the zero must be in the middle then you draw your line so remember after the zero must be negative which makes it less than 0

Answer:

I'm guessing it's D

Step-by-step explanation:

It says D is the answer

In looking at a scatter plot of inter-rater reliability, a researcher would want to see all the dots close to the line of agreement because it shows that there is a high level of agreement between the raters.

Inter-rater reliability refers to the degree to which different raters or observers agree on their judgements or evaluations of a particular behavior, characteristic, or event. It is a measure of consistency between the observations of two or more raters. Inter-rater reliability is important because it ensures that the results obtained from the research are valid and reliable, which means that they are accurate and can be trusted.

In a scatterplot of interrater reliability, the dots represent the ratings or observations made by different raters. The line of agreement is a straight line that represents perfect agreement between the raters, i.e., all the raters make the same rating. If all the dots are close to the line of agreement, it means that the raters are in close agreement with each other, and there is a high level of inter-rater reliability.

If the dots are scattered far from the line of agreement, it means that the raters are not in agreement with each other, and there is a low level of inter-rater reliability. Thus, a researcher would want to see all the dots close to the line of agreement because it shows that there is a high level of agreement between the raters.

for such more question on inter-rater reliability

https://brainly.com/question/14398707

#SPJ11

\(\cos( 50^o )=\cfrac{\stackrel{adjacent}{MN}}{\underset{hypotenuse}{MO}}\)

keep in mind that the opposite side is the side "facing off" the angle, and the adjacent is the one "not" facing it off.

Answer: \(\frac{3}{4}\)

Step-by-step explanation:

The equation is in the slope-intercept format of y=mx+b

In this format the slope is m

In this case m is \(\frac{3}{4}\)

Answer:

135 degree

Step-by-step explanation:

The x in the equation 326 = x + 8.50(36) represents the B. The delivery fee at the second store.

An equation is an algebraic statement that two or more mathematical expressions are equal or equivalent.

Equations are depicted using the equation symbol (=) to show the equality of algebraic expressions, which are the combination of values, constants, numbers, and variables using the mathematical operands.

The number of potted plants ordered for sponsors = 36

The charge per plant = $8.50

Delivery fee = $20

Equation: 326 = x +8.50(36)

Thus, in the equation, 326 = x + 8.50(36), x represents Option B, which is a fixed charge.

Learn more about equations at https://brainly.com/question/13763238.

#SPJ1

Answer:

XAHGSGDSFAFs

Step-by-step explanation:

E

Answer:5(1/5h+1/2)=12 1/2

Step-by-step explanation

First you multiply 5 with 1/5 to when Elon takes a break and add 1/2 to when Elon take a lunch beak

The type of influence on wellness that this represents is given as follows:

A. Social.

An influence on wellness is an activity that improves the morale of certain aspect of our lives.

The aspect improved in this problem is the social aspect, along with the physical aspect, as follows:

Since this is an example of social bonding, option A gives the correct option regarding which type of influence on wellness this is an example of.

For example, reading a book would be intellectual influence, while recycling would be environmental influence.

More can be learned about influences on wellness at https://brainly.com/question/4639722

#SPJ1

Answer:

= 12.56 m

Step-by-step explanation:

The circumference is found by

C = 2* pi *r

C = 2 * 3.14 * (2)

   = 12.56 m

Answer:

12.56 meters

Step-by-step explanation:

The circumference of a circle can be found using the following formula.

c= d* pi

We are given the radius. First, we must find the diameter. The diameter is twice the radius.

d=2*r

We know the radius is 2 meters. Therefore, we can substitute 2 in for r.

d=2*2

Multiply 2 and 2

d=4

The diameter is 4 meters.

Now we know the diameter, and can substitute 4 in for d in the circumference formula.

c= d* pi

d= 4 m

c= 4 m* pi

We also know we are using 3.14 for pi, so we can plug 3.14 in for pi.

c= 4 m * 3.14

c=12.56 m

The circumference of the circle is 12.56 meters.

I would call this method incorrect.

If you're trying to solve for b, what you should do is first isolate b ² :

5 + b ² = 30

b ² = 30 - 5

b ² = 25

Then take the square root of both sides, noting that √(x ²) = |x| for all x :

√(b ²) = √25

|b| = 5

Then b = +5 or b = -5.

Answer: 38.1$

Step-by-step explanation:

Answer:

About $24.34

Step-by-step explanation:

if you do 23 divided by 6 you get 3.8333333 then you do 3.83333333 times 6.35 and you get about $24.34.

The incorrect statement about mean is half of the numerical values in a data set are greater than the mean and half of the numerical values are less than the mean. (option c).

Let's first assume that our data set has an even number of values. In this case, we can divide the data set into two equal halves, where the first half contains the lowest values and the second half contains the highest values.

For example, consider the data set {2, 4, 6, 8, 10, 12}. We can divide this data set into two halves as follows:

First half: {2, 4, 6}

Second half: {8, 10, 12}

The mean of the entire data set is calculated as:

mean = (2 + 4 + 6 + 8 + 10 + 12) / 6

= 42 / 6

= 7

Now, notice that in this data set, half of the values (i.e., the first half) are less than the mean (7), while the other half (i.e., the second half) are greater than the mean. This is true for any data set with an even number of values.

Based on the example the option (c) is correct.

To know more about mean here

https://brainly.com/question/30891252

#SPJ4

The linear inequality is

16S + 10T ≤ 100

T = Number of t-shirts

S = Number of shorts

For 2 shorts,

32 + 19T ≤ 100.

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal =

Greater than and equal=

We have,

Cost of shorts = $16

Cost of t-shirts = $10

Total amount to spend = $100

Number of shorts to purchase = S

Number of t-shirts to purchase = T

The linear inequality is given as:

16S + 10T ≤ 100

Since S = 2,

16 x 2 + 10T ≤ 100

32 + 10T ≤ 100

10T ≤ 100 - 32

1OT ≤ 68

T ≤ 6.8

This means he can buy 6 or less than 6 t-shirts.

Thus,

The linear inequality is

16S + 10T ≤ 100

T = Number of t-shirts

S = Number of shorts

For 2 shorts,

32 + 19T ≤ 100.

Learn more about inequalities here:

https://brainly.com/question/20383699

#SPJ1