Question

9) Which one of the following expressions could be
used to find the average of the numbers x, y, and z?

Answer 1

Answer:

A) $\frac{x+y+z}{3}$

Step-by-step explanation:

the formula for average is the sum of the digits, then divide that sum by the number of digits.

for example: let x = 1, let y = 2, let z = 3

so 1+2+3 is 6

then divided by the number of digits: 3

6/3=2

the average is 2