Question

interpole 6 meios aritméticos entre -15 e -43 . URGEEEEENTE

Answer 1

n = 8      a1 = - 15      a8 = - 43

a8 = - 43
a1 + 7r = - 43
- 15 + 7r = - 43
7r = - 43 + 15
7r = - 28
r = - 28/7
r = - 4      

P.A.( - 15, - 19, - 23, -27, - 31, - 35, - 39, - - 43 )