Question

Jou Page
The mean of the number 8, 5,X, 6, 10,5, is 7
find the value of x​

Answer 1

formula:

$mean = \frac{sum \: of \: no.}{no.of \: numbers}$

solution:

$\frac{8 + 5 + x + 6 + 10 + 5}{6} = 7 \\ 34 + x = 7 \times 6 \\ x = 42 - 34 = 8$

answer:

x=8

hope it helps...