566 views
1 vote
Find the 11th term of the geometric sequence 10,20,40

User J Brazier
by
7.8k points

2 Answers

3 votes

Answer:

10,240

Explanation:

First, we find the constant ratio by dividing a number by the previous number.

r = 40/20 = 2

Now we apply the formula for term a_n of a geometric sequence.

a_n = a_1 * r^(n - 1)

a_11 = 10 * 2^(11 - 1)

a_11 = 10 * 2^10

a_11 = 10,240

User Christof Jans
by
8.6k points
1 vote

Answer:

10, 20, 40

scale factor = x2

10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240

answer = 10,240

User Tturbo
by
7.2k points

No related questions found

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