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lutik1710 [3]
3 years ago
5

I need need help fast (4a-7b+5+)

Mathematics
1 answer:
Nina [5.8K]3 years ago
5 0

Answer: 9

Step-by-step explanation:

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If it is assumed that the heights of men are normally distributed with a standard deviation of 2.5 inches, how large a sample sh
Volgvan

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30 men

Step-by-step explanation:

In order to be sure that the sample mean does differ from the population mean by more than 0.90, the sample size (n) that should be used is given by:

0.90 < Z\frac{s}{\sqrt{n}}

Where 'Z' , for a 95% probability is 1.960, 's' is the standard deviation of 2.5 inches:

0.90 > 1.960\frac{2.5}{\sqrt{n}}\\n >(\frac{1.960*2.5}{0.9})^2\\n>29.64

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{1000}^{m}  \div  {100}^{n} =  {10}^{z}   \\  \frac{1000 ^{m} }{ {100}^{n} }  =  {10}^{z}  \\   \\ {10}^{m - n}  =  {10}^{z}

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3 years ago
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Using the functions f(x) = (3 - x)/(x2 + 4) and g(x) = 3x, find the value of (f*g)(2).
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Answer:

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Step-by-step explanation:

For each of the functions, put 2 where x is and evaluate the expression.

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Then the product is ...

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4 0
2 years ago
<img src="https://tex.z-dn.net/?f=4%20%5Cfrac%7B1%7D%7B2%7D%20x%20%5Cfrac%7B2%7D%7B3%7D%20" id="TexFormula1" title="4 \frac{1}{2
aleksley [76]

Answer:

Step-by-step explanation:

4\frac{1}{2}* \frac{2}{3} =\frac{9}{2} *\frac{2}{3} =3

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