Question

If the average (arithmetic mean ) of 2,7, and x is 12, what is the value of x?

Answer 1

X=27

Explanation:

Answer 2

x=27

Explanation:

The mean is add all the numbers and divide by the number of points

(2+7+x)/3 =12

Multiply each side by 3

(2+7+x)/3 *3 =12*3

2+7+x = 36

Combine like terms

9+x = 36

Subtract 9 from each side

9+x-9 = 36-9

x = 27