Question

What is the common ratio of the following sequence?
9, -27, 81, -243

Answer 1

-3

Answer 2

@Nick_Black i think u must explain to Alexzndrac how u got -3

Answer 3

right

Answer 4

well there is a formula of it i.e is
T=ar^(n-1)
a= first term
r=common ration
and n= no. of times
T= term

Answer 5

\[t=ar ^{n-1}\]

Answer 6

got it???

Answer 7

yes thank you