Determine the value of t9 in a geometric sequence if t1 = 5 and r = -3

Carte asked Feb 10, 2022

326,653 views

35 votes

Carte asked Feb 10, 2022

by Carte

2.5k points

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

22 votes

Answer:

t₉ = 32805

Explanation:

The nth term of a geometric sequence is

t_(n) = t₁
(r)^(n-1)

Here t₁ = 5 and r = - 3 , then

t₉ = 5
(-3)^(8) = 5 × 6561 = 32805

JohnPS answered Feb 14, 2022

3.1k points

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

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

1.6m questions

2.0m answers