Question

What is the value of r of the geometric series 1.3(0.8) n-1

Answer 1

The answer is A.) 0.8!

Answer 2

r = 0.8 of geometric series.

Explanation:

Given : geometric series (1.3)(
`0.8^(n-1)`.

To find : What is the value of r of the geometric series

Solution : We have given that (1.3)
`0.8^(n-1)`.

By geometric series formula
`a_(n)` =
`a_(1)r^(n-1)`.

On comparison

`a_(1)` = 1.3

r = 0.8

Therefore, r = 0.8 of geometric series.