Register
How do I find a1 for the geometric sequence down below Sn = 1640, r = 3, n = 8
118k views
2 votes
How do I find a1 for the geometric sequence down below
Sn = 1640, r = 3, n = 8

User ChiragBhalgami
by
5.0k points

1 Answer

4 votes

Answer:

a1=1640/2187

Explanation:

Geometric sequence formula: an=a1 r^n-1

s8=1640=a1 3^8-1

1640=a1 3^8-1

1640=a1 3^7

1640=a1 2187

a1=1640/2187

User Jambaman
by
4.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.2m questions

6.8m answers

Other Questions

Pizza planet is running a special 3 pizzas for 16.50. What is the unit rate for one pizza
What number is halfway between 0 and 18
If the 9-inch wheel of cheese costs $18.60, what is the cost per square inch? If the cost is less than a dollar, put a zero to the left of the decimal point?
I need to simplify this expression.
Need answer to math problem!!!​
Link Copied!