Question

Find the value of x
2,8,9,7,6x ; the mean is 6

Answer 1

x=2/3

Explanation:

The mean is just the average of all the terms. Therefore, you can set up an algebraic expression to solve for x.

`(2+8+9+7+6x)/(5) =6`

`2+8+9+7+6x=30\\26x+6x=30\\6x=4\\x=4/6=2/3\\x=2/3`