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Determine the 15th term of the sequence
-1, -3,-9, -27, ...

Sagot :

Altavistardidn

Answer:

-4782969

Step-by-step explanation:

The first term is -1 and the common ratio is 3.  Thus, the sequence is

a(n) = -1*3^(n-1)

and the 15th term is a(15) = -1*3^14 = -4782969

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