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2 years ago

3 positive integers numbers that add up to 10 Help please

Mathematics

1 answer:

sladkih [1.3K]2 years ago

8 0

Answer:

3+2+5

Step-by-step explanation:

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A person breathes 2.5 x 10^-4 in about cubic meters of air per second. How long does it take to breathe in 2.5 cubic meters of a

Ipatiy [6.2K]

Answer:

10⁴ seconds

Step-by-step explanation:

Given that,

A person breathes $2.5\times 10^{-4}$ in about cubic meters of air per second.

We need to find time taken to breathe 2.5 cubic meters of air.

In 1 sec = $2.5\times 10^{-4}$ m³ of air breathe

Let in x seconds, 2.5 m³ of air taken by the person.

$x=\dfrac{2.5}{2.5\times 10^{-4}}\\\\x=10^4\ s$

Hence, in 10⁴ seconds 2.5 m³ of air is taken by the person.

5 0

3 years ago

How do you figure it out in steps 3r+n^2-r+5-2n+2

Katyanochek1 [597]

If you need to simplify the equation it would be:
$n^{2}$ +2r-2n+7
If not sorry..
Hope This Helps!

8 0

3 years ago

A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?

VladimirAG [237]

Answer:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

Step-by-step explanation:

For this case we know the population deviation given by:

$\sigma = 5.5$

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution $\bar X$ and for this case we know that the distribution is given by:

$\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})$

And the standard error would be:

$\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}$

And replacing we got:

$\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611$

4 0

3 years ago

What is X in 24x - 52 = -4 ( 1 + 6x )? <br> Please help.

fomenos

I believe x equals one

3 0

3 years ago

There are 4 baskets that store 16 bathroom towels. Consider the number of bathroom towels per basket

WINSTONCH [101]

Answer:

there are 4 bathroom towels per basket

Step-by-step explanation:

the equation is 16/4=4 hope this helps :)

5 0

2 years ago

Read 2 more answers