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faust18 [17]
3 years ago
11

Miss holman gave 90-cent trip to a waitress for serving for a meal coasting 6.00. What percent of the bill was there tip

Mathematics
1 answer:
Darina [25.2K]3 years ago
4 0
Here you go :)
0.90/6.00 *100=15%
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Mr. Jacobs is going to make a histogram of the test scores from the last math test he gave. He plans to first organize the data
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The stem and leaf plot will look like:
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The x- and Y negative coordinates have the same sign​
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if the x and y coordinates that mean that number is the solution to whatever the question is.

Step-by-step explanation:

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3 years ago
What is the coefficient of the variable in the expression 1/2 + v - 3​
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The variable in this case is v, and no coefficient is given, so it can be assumed to be 1.
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If you want to be 95​% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard
Aleksandr [31]

Answer:

The sample size required is at least 171

Step-by-step explanation:

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

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

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

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

What sample size is​ required?

A samle size of at least n is required, in which n is found when M = 3, \sigma = 20

So

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

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\sqrt{n} = \frac{20*1.96}{3}

(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}

n = 170.7

Rouding up

The sample size required is at least 171

5 0
3 years ago
2root 3 x 3 root 8 fully simplified
LuckyWell [14K]

Answer:

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Step-by-step explanation:

<h3>Given expression</h3>

  • 2 \sqrt{3} *3\sqrt{8}

<h3>Simplify the expression in steps as below</h3>

  • 2 \sqrt{3} *3\sqrt{8}  =
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Used properties in solution process:

  • \sqrt{a^2} =a
  • \sqrt{a}\sqrt{b}  =\sqrt{ab}
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