Question

The median of the set (n, n+5, n+6, n+9, n+15) is 9. What is the mean?

Answer 1

Answer:

   =9.4

Step-by-step explanation:

The median  is the middle of the numbers when lined up from smallest to largest

(n, n+5, n+6, n+9, n+15)

The median is n+6

n+6 = 9

Subtract 6 from each side

n +6-6 = 9-6

n = 3

The numbers are

(n, n+5, n+6, n+9, n+15)

3, 8 ,9 ,12, 15

The mean is where you add up all the numbers and divide by the number of numbers

mean = (3+8+9+12+15) /5

         = (47)/5

         = 9 2/5

        =9.4