2 years ago

What is the formula for the following geometric sequence?

Mathematics

1 answer:

Lostsunrise [7]2 years ago

7 0

Answer:

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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