Write an expression for the operation. the difference of r and 10

Mathematics

1 answer:

dangina [55]4 years ago

6 0

The final answer is 10-r.

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Brian can't decide which of three shirts he should wear to a party he could closes eyes and randomly pick a shirt or he could pu

Strike441 [17]

Answer:

Do know sorry I can help but maby

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3 years ago

PLEASE HELP!!!

Grace [21]

<h3>Answer: B) 2.9 approximately</h3>

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Explanation:

The weird or fancy looking E symbol is the greek uppercase letter sigma. It is effectively the english version of S to represent summation. So we add up all the $(x-\overline{x})^2$ terms to get this. Luckily this has already been done for us in the table where they wrote "sum = 34", so $\sum(x-\overline{x})^2 = 34$

From here, we substitute this into the formula, along with n = 5 since there are 5 items in the original list

So,

$s = \sqrt{\frac{1}{n-1}\sum(x-\overline{x})^2} \\\\s = \sqrt{\frac{1}{5-1}*34} \\\\s = \sqrt{\frac{1}{4}*34} \\\\s = \sqrt{0.25*34} \\\\s = \sqrt{8.5} \\\\s \approx 2.91547594742266 \\\\s \approx 2.9 \\\\$

This computes the sample standard deviation. To get the population standard deviation, you'd basically change the "n-1" to simply "n", and the rest of the formula is identical.

8 0

3 years ago

Read 2 more answers

What is the slope of the line that contains the points (-2,2) and (3,4)

Anton [14]

Answer:

2/5

Step-by-step explanation:

The slope of a line is given by

m = (y2-y1)/(x2-x1)

= (4-2)/(3--2)

= (4-2)/(3+2)