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Fed [463]
3 years ago
5

Nine more than a number is 58. Write and solve an equation to determine the number. (Writing the equation is required.)

Mathematics
2 answers:
denis23 [38]3 years ago
8 0

x+9=58

x=58-9

58-9=49

x=49

hope this helped! -Jentri

Fittoniya [83]3 years ago
8 0

the answer is  n+9=58

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Which of the following is the formula for the volume of a pyramid with base area B and height h?
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Correct choice is A.

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Brewed decaffeinated coffee contains some caffeine. We want to estimate the amount of caffeine in 8 ounce cups of decaf coffee a
rusak2 [61]

Answer:

We would have to take a sample of 62 to achieve this result.

Step-by-step explanation:

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We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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

In which \sigma is the standard deviation of the population and n is the size of the sample.

Assume that the standard deviation in the amount of caffeine in 8 ounces of decaf coffee is known to be 2 mg.

This means that \sigma = 2

If we wanted to estimate the true mean amount of caffeine in 8 ounce cups of decaf coffee to within /- 0.5 mg, how large a sample would we have to take to achieve this result?

We would need a sample of n.

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0.5\sqrt{n} = 2*1.96

Dividing both sides by 0.5

\sqrt{n} = 4*1.96

(\sqrt{n})^2 = (4*1.96)^2

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We would have to take a sample of 62 to achieve this result.

8 0
3 years ago
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Studentka2010 [4]

Answer:

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