Question

insira 7 meios aritméticos entre -15 e -47​

Answer 1

Explicação passo-a-passo:

a1=-15

a9=-47

an=a1+(n-1).r

-15+(9-1).r=-47

-15+8r=-47

8r=-47+15

8r=-32

r=-32/8

r=-4

Resposta :

PA={ -15, -19,-23,-27,-31,-35,-39,-43,-47}