Question

Given a set `{9,3,4,6,x,6,1,-4}`, for what x would the mean of the set be -32?

Answer 1

`x=(-281)`

Explanation:

Sum of `{9,3,4,6,x,6,1,-4}` is `25+x`

If the mean of these `8` numbers is `(-32)` then their sum must be:
`(-32)xx8 = -256`

`25+x=-256`

`x= =-281`