Question

What is the mean of X, X+3,X+6,X+9,and X +12?

Answer 1

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ANSWER

==> x,x+3,x+6,x+9,x+12

==> x,x+3,x+6,x+9,x+12

5

==> 5x+30

5

==> 35x

5

==> 7x

mean = 7x