ElenaHagan ElenaHagan

13-05-2020
Mathematics

contestada

Find the common ratio of the geometric sequence: 1,−3,9,−27,81,…
A. 3
B. −13
C. -3
D. 13

Respuesta :

surjithayer10 surjithayer10

13-05-2020

Answer:

-3

Step-by-step explanation:

common ratio=a2/a1=-3/1=-3

2.

a1=3

a5=48

an=a1 r^(n-1)

48=3r^(5-1)

r^4=48/3=16=2^4

r=2

Answer Link

23rschwab 23rschwab

13-05-2020

Answer:

-3

Step-by-step explanation:

Answer Link

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