find the 7th term of the geometric progression if the first and 5th terms are 16 and 9 respectively.

Answer 1

a = 16
ar^4 = 9
sub in a = 16
16r^4 = 9
4r = ± 3
r = ± 3/4

7th term = ar^6
= 16(±3/4) = 16(729/4096)
= 729/256

Answer 2

I don't understand

Answer 3

I dont understand