cliffxrd
cliffxrd cliffxrd
  • 09-04-2017
  • Mathematics
contestada

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

Respuesta :

TheHero
TheHero TheHero
  • 09-04-2017
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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