What is the 7th term of the geometric sequence where a1 = -4,096 and a4 = 64?

asked Sep 4, 2017 173k views

1 vote

7.1k points

Please log in or register to add a comment.

6 votes

Answer:

A. -1

Explanation:

John Fonseka answered Sep 7, 2017

7.5k points

1 vote

First, we calculate the common ratio.
an = arⁿ⁻¹
64 = -4096r³
r = -1/4
a(7) = -4096r⁷⁻¹
a(7) = -1

Axil answered Sep 10, 2017

by Axil

7.1k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.7m questions

11.3m answers