Question

If the average of 1,4,9 x ,25,36 and 49,is 20, then x=?

Answer 1

Answer:

If the average of 1,4,9 x ,25,36 and 49,is 20, then x=?

Step-by-step explanation:

AVERAGE =  SUM OF ALL NUMBER / TOTAL NUMBER

20  = 1+4+9+X+25+36+49 /7

20 * 7 = 124+X

140 -124 = X

16= X