Here are three numbers 5 7 9 show that the mean of the 3 numbers is 7

see explanation

Step-by-step explanation:

The mean is calculated as

mean = = = = 7

Step-by-step explanation:

given, the numbers are 5,7,9.

now , N=3 and sum of x= 21

by formula,

mean = sum of x/N

or , mean = 21/3

=7is answer

hope its helpful..

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.