Question

The numbers 3, 5, 7 and 9 have their frequencies respectively x-2, x+2, x-3 and
x+3 if the anithmetic mean is 6.5 then find x.​

Answer 1

Answer:

x=5

Step-by-step explanation:

3(x-2)+5(x+2)+7(x-3)+9((x+3)=24x+10

(24x+10)/(x-2+x+2+x-3+x+3)=6.5

Therefore x=5

Mark my ans brilliant answer