Question

Insira 7 meios aritmetricos entre 20 e 28.

Answer 1

Boa noite Heyjessy

PA

a1 = 20
a9 = 28

termo geral
an = a1 + r*(n - 1)

a9 = a1 + 8r
28 = 20 + 8r
8r = 8
r = 1

PA = (20, 21, 22, 23, 24, 25, 26, 27, 28)