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3 years ago

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The ratio of 7th grade students to 8th students in a soccer league is 17:23. If there are 200 students in all, how many are in t

he 7th.

1 answer:

Katarina [22]3 years ago

8 0

Answer:

<h2>35</h2>

Step-by-step explanation:

<h2>17:23=17+23=40</h2><h2><u>7</u>×200</h2><h2>40</h2><h2><u>7</u>×20</h2><h2>4</h2><h2>7×5=35</h2>

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kobusy [5.1K]

$\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
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7 0

3 years ago

In a manufacturing process, a machine produces bolts that have an average length of 5 inches with a variance of .08. If we rando

xz_007 [3.2K]

Answer:

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

And replacing:

$\mu_{\bar X}= 5$

And the deviation:

$\sigma_{\bar X}= \frac{0.283}{\sqrt{5}}= 0.126$

And the distribution is given:

$\bar X \sim N(\mu= 0.08, \sigma= 0.126)$

Step-by-step explanation:

For this case we have the following info given :

$\mu= 5. \sigma^2 =0.08$

And the deviation would be $\sigma = \sqrt{0.08}= 0.283$

For this case we select a sample size of n = 5 and the distirbution for the sample mean would be:

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

And replacing:

$\mu_{\bar X}= 5$

And the deviation:

$\sigma_{\bar X}= \frac{0.283}{\sqrt{5}}= 0.126$

And the distribution is given:

$\bar X \sim N(\mu= 0.08, \sigma= 0.126)$

4 0

3 years ago

Help me now please i want to finish this today so I can finish summer school

SOVA2 [1]

same i pass im at like 70% Step-by-step explanation:

4 0

3 years ago

Add the expressions four -2/3 B +1/4 a and 1/2 a+1/6b-7. What is the simplified some?

anzhelika [568]

Answer:

I tried the question and I got. a/4-b/2-5/2

Step-by-step explanation:

I hope this helps

3 0

3 years ago

3x^2+6x+3y^2-12y+54=0 is a ____.

alexira [117]

Answer:

radius 2

Step-by-step explanation:

8 0

3 years ago