Register

What is the sum of the first five terms of a geometric series with a1 = 10 and r = 1/5?

What is the sum of the first five terms of a geometric series with a1 = 10 and r = 1/5?
185k views
2 votes
What is the sum of the first five terms of a geometric series with a1 = 10 and r = 1/5?

User Andrew McGivery
by
7.9k points

2 Answers

3 votes
The formula to use is:

S_(n) =(a(1-r^(n)))/(1-r)

S_(5) =(10(1-0.2^(5)))/(1-0.2)=12.496
The answer is 12.496
User Ajitesh
by
7.2k points
2 votes

Answer:

1562/125

Explanation:

in improper fraction form

User So Cal Cheesehead
by
8.4k points
← Prev Question Next Question →

No related questions found

Ask a Question
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

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
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?
Link Copied!