Basic Math Examples

$9$ $8 \sqrt{72}$

Step 1

Rewrite $72$ as $6^{2} \cdot 2$ .

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Step 1.1

Factor $36$ out of $72$ .

$9, 8 \sqrt{36 (2)}$

Step 1.2

Rewrite $36$ as $6^{2}$ .

$9, 8 \sqrt{6^{2} \cdot 2}$

Step 2

Pull terms out from under the radical.

$9, 8 (6 \sqrt{2})$

Step 3

Multiply $6$ by $8$ .

$9, 48 \sqrt{2}$

Step 4

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{9 + 48 \sqrt{2}}{2}$

Step 5

Divide.

$38.44112549$

Step 6

The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

$38.4$