Question

a1 = 9;r =1/3; find a7​

Answer 1

Step-by-step explanation:

ar power 6 = 9 * 1/729 =9*9-3 cube answer is -81

Answer 2

Answer:

a7 = 1/ 3power4

Step-by-step explanation:

Given that,

a1=9 ,r=1/3

General form of G.P is a *r power n-1

=9 (1/3) power 7-1

=9 (1/3)power 6

We can write 9 as 3 square

= 3 square *1/3 power 6

=1/ 3 power 4

= 1 /81

Hence, the answer is 1 /81

Follow me and add to brainlist.

I hope you got it