Question

Interpole os nove meios aritméticos entre -10 e 50.

Answer 1

a1=-10
an=50
n=11
razão?


an=a1+(n-1).r
50=-10+(11-1).r
50=-10+10r
50+10=10r
60=10r
r=60/10
r=6



(-10,-4,2,8,14,20,26,32,38,44,50....)

Answer 2

Olá Felipe.

Dados:
a1=-10
an=50
n=11
ra= ?

Fórmula:
an=a1+(n-1).r
-Substituindo:
50=-10+(11-1).r
50=-10+10r
50+10=10r
60=10r
r=6

{-10,-4,2,8,14,20,26,32,38,44,50....}