Question

If the mean of the four numbers 4, 8, x and 12 is 10, then x is

Answer 1

Hello There today we will find the mean of those numbers

since our list is -
`4,8,x,12` and the mean is 10 we can make an equation

`((4+8+x+12))/(4)=10\\(4+8+x+12)=40\\x=40-24\\x=16`

the mean is 16

Answer 2

16

Explanation:

The mean (average) of 4 numbers is 10 => the sum of these numbers are 10 x 4 = 40

x = 40 - 4 - 8 - 12 = 16

Hope it helps :)