Question

What is the common ratio for the geometric sequence? −15,−9,−27/5,−81/25,... Enter your answer in the box.

Answer 1

3/5

Explanation:

to find the ratio, take the 2nd term and divide by the first term

-9/-15 = 9/15

which simplifies to 3/5

check by dividing the 3rd term by the 2nd term

-27/5 / -9

-27/5 * -1/9 = 3/5

the ratio is 3/5