Question

For data x,9, 12, 18 mean is 40 than x is

​

Answer 1

Answer:

Plz mark me as brainlist answer

Step-by-step explanation:

Plzz mark me as brainlist answer

Plzz mark me as brainlist

Answer 2

x = 121

Step-by-step explanation:

Mean = (x + 9 + 12 + 18)/4 =40

× + 39 = 40 × 4

× + 39 = 160

x = 160 - 39 = 121