Question

What is the common ratio of the geometric sequence (-3,-9, -27,-81.....}*

Answer 1

Divide any term by the term before it, and you'll get the common ratio of the geometric series.

-81/-27=3
The common ratio is 3.

Answer 2

The common ratio is 3

Explanation:

To find the common ratio, take the second term and divide by the first term

-9/-3 = 3

We can check by dividing the third term by the second term

-27/-9 =3