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2 years ago

10

How can we describe the relationships that exist between circles and lines?

1 answer:

Lunna [17]2 years ago

5 0

circles are 360⁰ and lines are 180⁰

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A study on students drinking habits wants to determine the true average number of alcoholic drinks all UF male students have in

Butoxors [25]

Answer:

B. 97

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many students should be sampled to be within 1 drink of the population mean with 95% probability?

This is n when $M = 1$

We know from preliminary studies that the standard deviation is around 5, so $\sigma = 5$

$M = z*\frac{\sigma}{\sqrt{n}}$

$1 = 1.96*\frac{5}{\sqrt{n}}$

$\sqrt{n} = 5*1.96$

$(\sqrt{n})^{2} = (5*1.96)^{2}$

$n = 96.04$

We round up, so the correct answer is:

B. 97

3 0

3 years ago

Which of the following is not a congruence transformation?

Anna007 [38]

The answer would be, C, stretching.
Hope this helped :)

5 0

4 years ago

The senior class is taking a trip to an amusement park. They received a special deal where for every 3 tickets they purchased th

gizmo_the_mogwai [7]

1384.50
53.25
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$ 1 3 3 1 . 2 5

7 0

3 years ago

What is 2x+3>10 simplified ?

mezya [45]

2x>7 hope this helps

7 0

4 years ago

Read 2 more answers

Which statement best explains if the graph correctly represents the proportional relationship y = 3.5x? A graph of a coordinate

Evgesh-ka [11]

Answer:

It does, the points shown on the line would be part of $y=3.5x$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

In this problem we have

$y=3.5x$

The slope is equal to $m=3.5$ ------> is a positive slope

The line passes through the origin

therefore

This linear equation represent a proportional variation

Verify the values of the points of the graph with the equation

For $x=1$

$y=3.5*1=3.5$ -----> is correct

For $x=2$

$y=3.5*2=7$ -----> is correct

7 0

3 years ago