Question

What is the 9th term of this geometric sequence?


2/3, 2, 6, 18, 54, 162, ...

Answer 1

each is 3 times the last

Answer 2

2/3 * 3^(n-1)

Answer 3

let n = 9 for the 9th term

Answer 4

4374

Answer 5

\[a _{n} = \frac{ 2 }{ 3 } * 3^{n - 1}\]

Answer 6

is my answer right ?

Answer 7

i didnt calculate. lol hold on

Answer 8

yea

Answer 9

ok (:

Answer 10

thank you !
your such a big help

Answer 11

you can test by putting in a known value, like n = 4th term and see if it comes out to 18

Answer 12

(2/3) *3^(4-1)

Answer 13

true

Answer 14

so now you can find the 1,876,985th term!

Answer 15

haha thank you !