3 years ago

Use factor form to find the x-intercepts y=x^2+11x+24

Mathematics

1 answer:

VashaNatasha [74]3 years ago

6 0

Answer:

(8,0) and (3,0)

Step-by-step explanation:

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The sum of two numbers is twice their difference. The larger number is 2 more than twice the smaller

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The larger number is 6 and the smaller one is 2.

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3 years ago

Simplify the following expression. Write your answer in simplest radical form. y1/5 x y1/6

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Answer:

x)(y1)

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3 years ago

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

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

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

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

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

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2 years ago

I beg you to help me .

choli [55]

Answer:

16+3=y

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Step-by-step explanation:

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3 years ago

A hat that originally cost 12.50 with a 60% markup find the total cost

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Answer:

$20.00 dollars will be the new cost.

Step-by-step explanation:

Multiply $12.50 and 60% to get $7.50.

$7.50 plus $12.50 is $20.00.

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3 years ago