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NeX [460]
3 years ago
13

Write an equation for the nth term of the given geometric sequence -12,-36,-108...an

Mathematics
1 answer:
julsineya [31]3 years ago
7 0

Answer:

nth term of the geometric sequence

an= -12*3^(n-1)

Step-by-step explanation:

First term

a= -12

Second term

ar= -36

-12r=-36

r=-36/-12

=3

Third term

ar^2= -108

-12(3)^2

= -12(9)

= -108

nth term of the geometric sequence

an=ar^(n-1)

= -12*3^(n-1)

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