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3 years ago

PLS HELP!!

Mathematics

1 answer:

irakobra [83]3 years ago

3 0

Answer:

3375

Step-by-step explanation:

The formula for volume is

volume = length x height x width

or in simpler terms (only works for cubes i think)

v = a^3

so we know that the side is 15cm long, so we substitute that back into the equation, so,

3375 = 15 x 15 x 15

3375 = 15^3

I hope that this helps you out :)

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According to USA Today, customers are not settling for automobiles straight off the production lines. As an example, those who

MrMuchimi

Answer: $(24980.25,\ 25419.75)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n= 179$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=20200+5000=25200$

Standard deviation : $\sigma= 1500$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Now, a confidence interval at the 95% level of confidence will be :-

$25200\pm(1.96)\dfrac{1500}{\sqrt{179}}\\\\\approx25200\pm219.75\\\\=(25200-219.75,\ 25200+219.75)\\\\=(24980.25,\ 25419.75)$

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4 years ago

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kow [346]

2 (an - 1) = 40
2an - 2 =40
2an = 40 - 2
2an = 38
2an/2 = 38/2
an = 19

3 0

3 years ago

A circle has a circumference of 28.2628.2628, point, 26 units. What is the diameter of the circle?

saul85 [17]

Answer:

8.28 units

Step-by-step explanation:

The formula for the circumference of a circle is $C=\pi d$

where

$C$ is the circumference of the circle

$d$ is the diameter of the circle

We know form our problem that the circumference of our circle is 26.28 units, so $C=28.26$ . Let's replace that value in our formula and find $d$ :

$C=\pi d$

$26=\pi d$

Divide both sides of the equation by $\pi$

$\frac{26}{\pi } =\frac{\pi d }{\pi }$

$\frac{26}{\pi } =d$

$d=\frac{26}{\pi }$

$d=8.28$

The diameter of the circle that has a circumference of 28.26 units is 8.28 units.

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3 years ago

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castortr0y [4]

Answer:

1/3

Step-by-step explanation:

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4 years ago

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