Question

What is the common ratio of the sequence?

-2, 6, -18, 54,.

Answer 1

common ratio = 6/-2 = -3

Answer 2

`-3`.

Explanation:

We have been given a geometric sequence. We are asked to find common ratio of the sequence.

We can find the common ratio of any geometric sequence by dividing any term of sequence by its previous term.

`\text{Common ratio}=(6)/(-2)`

`\text{Common ratio}=-3`

`\text{Common ratio}=(-18)/(6)`

`\text{Common ratio}=-3`

Therefore, the common ratio of the given sequence is
`-3`.