Question

1) What is the common ratio of the following geometric sequence?
5, 15, 45,…

Answer 1

r=3

Answer 2

What are the next four terms in the following geometric sequence?
5, 15, 45

Answer 3

I just need help on the last fourth term.

Answer 4

T4= ar^n-1
= 5*3^4-1
= 5*3^3
= 5*27
T4 = 135

T5= ar^n-1
= 5*3^5-1
= 5*3^4
= 5*81
T5 = 405

T6= ar^n-1
= 5*3^6-1
= 5*3^5
= 5*243
T6= 1215

Answer 5

5,15,45
a, ar, ar^2, ar^3,...