Question

if the mean of the observation x,x+3,x+5,x+7,x+10 is 9 find the value of x​

Answer 1

Answer:

x=4

Step-by-step explanation:

$mean = \frac{sum \: of \: all \: value}{total \: no \: of \: value} \\ 9 = \frac{x + x + 3 + x + 5 + x + 7 + x + 10}{5} \\ 9 = \frac{5x + 25}{5} \\ 45 = 5x + 25 \\ 45 - 25 = 5x \\ \frac{20}{5} = x \\ x = 4$

I hope it will help you.