Register
The 4th term of a geometric sequence is 135, and the common ratio is 3. What is the first term of the sequence?
177k views
3 votes
The 4th term of a geometric sequence is 135, and the common ratio is 3. What is the first term of the sequence?

User Oleg Kurbatov
by
8.9k points

1 Answer

3 votes
Assume the first term is a. The second term is 3a. The third term is 9a. The forth term is 27a.

27a=135 therefore a=135/27 = 5
User MrValdez
by
8.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.5m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Link Copied!