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30. 9, -27, 81, -243, ... Find the next number
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16 votes
30. 9, -27, 81, -243, ...
Find the next number

User Flaxon
by
4.7k points

1 Answer

11 votes

Answer:

729

Explanation:

Write the recursive formula through the pattern:


a_(n+1)=-3a_(n)

Find terms of sequence through 9, -27, 81, -243 :

729

I hope this helps you

:)

User Let Me Tink About It
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