Question

What is the 8th term of the geometric sequence -1, 3, -9, ...?

Answer 1

first find common ratio
this = -3 /-1
the 8th term is ar^(n-1)

where a = first term (-1), r = common ratio and n = 8

Answer 2

* sorry common ratio = 3 /-1

Answer 3

\[\large t_n = a.r^{n-1}\]

Here put r = 8, a = -1 and r = -3

Answer 4

Sorry put n = 8
a = -1 and r = -3

Answer 5

2187

Answer 6

ty

Answer 7

Yes you are right..
But there is a little mistake I think..

Answer 8

= -1 * (-3)^7 = 2187

Answer 9

no mistake

Answer 10

I was just kidding..
There is no mistake...

Answer 11

lol mk byeeeeeeeeeeeeee ty