Question

What is the common ratio of the geometric sequence?
-2/3, -2, -6,-18,?

Answer 1

Answer:

common ratio = 3

Step-by-step explanation:

-2/3, -2, -6, -18 .........

t1 = -2/3 t2 = -2 t3 = -6

common ratio = t2/t1

$\frac{ - 2}{ - \frac{2}{3} } = - 2 \times \frac{3}{ - 2} = 3$

common ratio = t3/t2

$\frac{ - 6}{ - 2} = 3$

therefore the common ratio is 3