Question

What is the common ratio for this geometric sequence?

Answer 1

Answer:

The common ratio is 1/3.

Step-by-step explanation:

Divide each term after the first by the previous one.

9/27 = 1/3

also 3/9 = 1/3 and 3 / 3 = 1/3.

Answer 2

Answer:

A. 1/3

Step-by-step explanation:

$\text{The common ratio of a geometric sequence}\ a_n:\\\\r=\dfrac{a_{n+1}}{a_n}\\\\\text{We divide next term by the previous one.}\\\\r=\dfrac{9}{27}=\dfrac{9:9}{27:9}=\dfrac{1}{3}\\\\r=\dfrac{3}{9}=\dfrac{3:3}{9:3}=\dfrac{1}{3}\\\\r=\dfrac{1}{3}\\\vdots$