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3 years ago

HELP DUE AT 4??!!!!!

Mathematics

1 answer:

kicyunya [14]3 years ago

6 0

Answer:

12. Since the pool is square, all the sides are equal. The area is length times height, so that means it would be 12 times 12, which is 144. The answer is 12 feet.

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

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GalinKa [24]

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3 years ago

Find the solutions to the equation below.

yanalaym [24]

Answer:

X=1/2. X=4/3

Step-by-step explanation:

6x2+5X-4=0

6X2+8X-3X-4=0

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3 years ago

What is the slope of the line that passes through the points (2, 8) and (6, 12)?

Ksenya-84 [330]

12-8 over 6-2= 4 over 4= 1

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3 years ago

Use the given information to find the minimum sample size required to estimate an unknown population mean μ.

larisa86 [58]

Answer:

The number of business students that must be randomly selected to estimate the mean monthly earnings of business students at one college is 64.

Step-by-step explanation:

The (1 - α) % confidence interval for population mean is:

$CI=\bar x\pm z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}$

The margin of error for this interval is:

$MOE= z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}$

The information provided is:

σ = $569

MOE = $140

Confidence level = 95%

α = 5%

Compute the critical value of z for α = 5% as follows:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

*Use a z-table.

Compute the sample size required as follows:

$MOE= z_{\alpha/2}\ \frac{\sigma}{\sqrt{n}}$

$n=[\frac{z_{\alpha/2}\times \sigma}{MOE}]^{2}$

$=[\frac{1.96\times 569}{140}]^{2}\\\\=63.457156\\\\\approx 64$

Thus, the number of business students that must be randomly selected to estimate the mean monthly earnings of business students at one college is 64.

4 0

3 years ago