2 years ago

8.1 Lesson 10 Problem Set (8.EE.A.4)

Mathematics

1 answer:

arsen [322]2 years ago

6 0

Answer:

Step-by-step explanation:

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Is (x - 1) a factor of P(x) = 4x? - 9x2 + 4x+1? If it is, write P(x) as a product of

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Answer: i don't even know what a factor is

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2 years ago

A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig

Anika [276]

Answer: (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

$\mu=118\text{ minutes}$

$\sigma=65\text{ minutes}$

Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=\pm2.576$

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

$118\ \pm\ 2.576\times\dfrac{65}{\sqrt{463}} \\\\\approx118\pm7.78=(118-7.78\ ,\ 118+7.78)=(110.22,\ 125.78)$

Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

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3 years ago

-7 (5y - 2u - 5)<br> Use the distributive property to remove parentheses

Montano1993 [528]

Times -7 by everything in the parentheses. so

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therefore 35y+14u+35

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2 years ago

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svp [43]

Answer:

2/3

Step-by-step explanation:

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2 years ago

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The answer is 8, hope this helps :)

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