82.7k views
2 votes
What is the common ratio for the geometric sequence? −15,−9,(−27/5),(−81/25),...

User Lightrek
by
8.5k points

1 Answer

6 votes
The common ratio for a geometric sequence is r=a(n+1)/an or a₂/a₁

In this sequence: a₁=-15; a₂=-9

r=a₂/a₁=-9/-15=3/5

Answer: the common ratio is 3/5
User Reka
by
8.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories