Question

HELP PLEASE/ FAN + MEDAL
-
-
What is the 6th term of the geometric sequence shown?

80, 40, 20, . . .

Answer 1

count out three more is the easiest way
you are dividing by 2 each time
\[80,40,20,10,...\]

Answer 2

n/2 is the equation here. It'll go like this:
80 ,40, 20, 10, 5 ,2.5 ,1.25 ,0.62.5 ,etc.

Answer 3

in a geometric sequence a = 1st term, r = common ratio and n = term number nth term = a*r^(n-1)
i know theres answers but i wanted to answer to :3