Question

if the arthemic mean of 3 and x is 5 , then the value of x is ____

Answer 1

Answer:

7

Step-by-step explanation:

The arithmetic mean of a and b is (a+b)/2.

5 = (3 + x) / 2

10 = 3 + x

7 = x

Answer 2

Answer:

7

Step-by-step explanation:

arithmetic mean = (sum of two numbers)/2

5 = (3+x)/2

(3+x) = 5*2 = 10

∴ x = 10 - 3 = 7

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