Math, asked by preethrmn, 1 year ago

15. Find x if 9, x, 14, 18 x, x, 8, 10 and 4 have
a mean of 11.

Answers

Answered by Anonymous

9

Step-by-step explanation:

mean = sum of all values/no of values

11=9+x+14+18+x+x+8+10+4/9

11=63+3x/9

99=63+3x

99-63=3x

36=3x

x=12

checking:9+12+14+18+12+12+8+10+4/9=99/9=11

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