Question

Find the mean of the numbers
1, -3, -10
-15, 4, -22
-7.5, 3, -6.5

Answer 1

13. -4 14. -11 15. -3.6 continued

Explanation:

13. 1+-3= -2+-10 -12/3= -4

14. -15+4= -11+-22= -33/3 -11

15. -7.5+3= -4.5+ -6.5= 11/3= -3.6 continued

Answer 2

13. -4 14. -11 15.
`-(11)/(3)`

Explanation:

13. (1-3-10)/3

14. (-15+4-22)/3

15. (-7.5+3-6.5)/3