Question

What is the sum of the first 5 terms in the geometric sequence a1=3 and r=1/3

Answer 1

Whats your guess?

Answer 2

i dont have a clue

Answer 3

www.mathway.com

Answer 4

helps you

Answer 5

tried that

Answer 6

this isnt an equation its a sequence

Answer 7

A=3 and r=1/3

Answer 8

yup

Answer 9

what the sum of first five terms

Answer 10

sum = a(1-r^n)/(1-r)
=6[1-(1/3)^5]/(1-1/3)
=6*(242/243)/(2/3)
= 242/27

Answer 11

was i right?