Question

Qual das Progressões Aritméticas tem como razão -3 (r=-3)? *

A (-3,-3,-3,-3,-3,-3)
B (0,3,6,9,12,15)
C (5,2,-1,-4,-7,-10)
D (1,-3,9,-27,81)

urgenteee​

Answer 1

Resposta:C (5,2,-1,-4,-7,-10)

Explicação passo-a-passo:

(5,2,-1,-4,-7,-10)

r=a2-a1-->r=2-5--->r=-3