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olchik [2.2K]
3 years ago
15

What is the formula for the following geometric sequence?

Mathematics
1 answer:
Lostsunrise [7]3 years ago
7 0

Answer:

A

Step-by-step explanation:

The n th term formula for a geometric sequence is

a_{n} = a(r)^{n-1}

where a is the first term and r the common ratio

here a = - 5 and r = - 10 ÷ - 5 = 2, thus

a_{n} = - 5(2)^{n-1} → A

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