Question

insira 7 meios aritméticos entre -3 e 29

Answer 1

a₁ = -3
a₉ = 29
r = ?

a₉ = a₁ + 8r
29 = -3 + 8r
8r = 29 + 3
8r = 32
r = 32/8
r = 4

P.A. (-3, 1, 5, 9, 13, 17, 21, 25, 29)