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3 years ago

I. A rhombus is a special type of square.

Mathematics

1 answer:

Dafna11 [192]3 years ago

4 0

I’m sure I, is the only one that is correct.

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What is the side length of a cube with a volume of 0.216 m3?

aksik [14]

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Cube root 0.216 to get your answer

(Note: This makes sense if you know the volume of a cube is the same value multiplied together 3 times)

The answer is option A 0.6 m

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4 years ago

You can drive your car 21.7 miles with one gallon of gasoline. At that rate, how many miles can you drive with 13.2 gallons of g

Mrac [35]

Your answer should come out to be 286.6

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3 years ago

Annual starting salaries for college graduates is unknown. Assume that a 95% confidence interval estimate of the population mean

kumpel [21]

Answer:

A sample of 217 is needed.

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 the margin of error 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.

If the population standard deviation is $3,750 how large should the sample be if margin of error is $500

We have that $\sigma = 3750$ .

We need a sample of n, and n is found when $M = 500$ . So

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

$500 = 1.96*\frac{3750}{\sqrt{n}}$

$500\sqrt{n} = 1.96*3750$

$\sqrt{n} = \frac{1.96*3750}{500}$

$(\sqrt{n})^{2} = (\frac{1.96*3750}{500})^{2}$

$n = 216.1$

Rounding up

A sample of 217 is needed.

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3 years ago

Monyne created a map of her neighborhood. She colored in the distance from her school to her house and wrote on the map that the

anyanavicka [17]

7/9 i used thiis app called socratic

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3 years ago

Odd numbers greater than -40 but less than -28

AURORKA [14]

-39, -37, -35, -33, -31, -29. Odd numbers are the same just backwards ;)

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4 years ago

Read 2 more answers