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dimulka [17.4K]
3 years ago
8

HELPP!!!! ASAPfknfkdkcmf

Mathematics
2 answers:
valentina_108 [34]3 years ago
5 0

Answer:

c

you can do this brooo(θ‿θ)(θ‿θ)(θ‿θ)

nexus9112 [7]3 years ago
3 0

Answer: A im pretty sure

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BabaBlast [244]

area of floor = length * width

length =18 feet

width =12 feet

area =12*18 = 216 feet square

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What is the complete factorization of 36y2 − 1?
ludmilkaskok [199]

Answer:

36y² - 1

Factorize

We have the final answer as

(y -  \frac{1}{6} )(36y + 6)

Hope this helps you

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What is the reason for each step in the solution of the equation?
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How do I solve for X ?
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Angles S, T and SUT must add to 180 degrees because they're the interior angles of a triangle. The angles at point U (SUT and FUT) are supplementary, so they also add to 180 degrees. This means SUT=180-(18x+2)=178-18x.

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7 0
3 years ago
Find the smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the pop
Andreyy89

Answer:

The smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income is 48.

Step-by-step explanation:

The complete question is:

The mean salary of people living in a certain city is $37,500 with a standard deviation of $2,103. A sample of n people will be selected at random from those living in the city. Find the smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income. Round your answer up to the next largest whole number.

Solution:

The (1 - <em>α</em>)% confidence interval for population mean is:

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

The margin of error for this interval is:

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

The critical value of <em>z</em> for 90% confidence level is:

<em>z</em> = 1.645

Compute the required sample size as follows:

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

      n=[\frac{z_{\alpha/2}\cdot\sigma}{MOE}]^{2}\\\\=[\frac{1.645\times 2103}{500}]^{2}\\\\=47.8707620769\\\\\approx 48

Thus, the smallest sample size n that will guarantee at least a 90% chance of the sample mean income being within $500 of the population mean income is 48.

3 0
3 years ago
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