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V125BC [204]
3 years ago
8

What is recursive rule for the sequence?

Mathematics
2 answers:
Sphinxa [80]3 years ago
5 0
a_{n}=9(-5)^{n-1}
\\ \\ a_{1}=9*5^{1-1}=9
\\ \\ a_{1}=9
\\ \\r=-5
\\ a_{n}=-5a_{n-1}

 This is geometric sequence, correct answer is A.

Diano4ka-milaya [45]3 years ago
5 0
It should be the first one an = -5 (an -1), a1 =9
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