199k views
6 votes
If the
average (arithmetic
mean) of 2, 7, and x is 12,
what is the value of x?

1 Answer

5 votes

Answer:

x = 27

Explanation:

mean is calculated as

mean =
(sum)/(count)

sum = 2 + 7 + x = 9 + x and count = 3 , then


(9+x)/(3) = 12 ( multiply both sides by 3 to clear the fraction )

9 + x = 36 ( subtract 9 from both sides )

x = 27

User Laurencevs
by
7.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories