Insert two arithmetic means between -2 and 13. A. 1, 10 B. 3, 8 C. 2, 9 D. 4, 7

1 answer:

4 0

A1 = -2

a4 = 13

13 = -2 + d ( 4-1 )

13 = -2 + 3d

d = 15/3 = 5

a2 = -2 + 5 = 3

a3 = 3 + 5= 8

3, 8 (B)

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