Math, asked by mattaparthyharshita, 3 months ago

the mean of 12 6 3x 5 7 and 9 is 18 find the value of x

Answers

Answered by darshitanarsingani17

1

Answer:

23

Step-by-step explanation:

Mean = sum of all the observations / No. of observations

∴ 18 = (12+6+3x+5+7+9) / 6

∴ 108 = 39 + 3x

∴ 3x = 69

∴ x = 69/3

∴ x = 23

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