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Mathematics 16 Online
OpenStudy (anonymous):

Find the general term a n for the geometric sequence a1=-4 and a2=20

OpenStudy (cwrw238):

common ratio r = a2/a1 = -5 nth term = a1 r^(n- 1)

OpenStudy (cwrw238):

plug in values of a1 and r

OpenStudy (anonymous):

An=20?

OpenStudy (anonymous):

I am very confused on what to do with ^n-1

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