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faltersainse [42]
3 years ago
11

What is the recursive formula for this geometric sequence?

Mathematics
2 answers:
iogann1982 [59]3 years ago
8 0
B is the answer because first number is 2 and common ratio is - 5
Tanzania [10]3 years ago
4 0

Answer: B.

a_1=2\\a_n=a_n\times(-5)

Step-by-step explanation:

The given geometric sequence : 2, -10, 50, -250

The first term of the sequence : a_1=2

The common ratio between the terms :r=\dfrac{-10}{2}=-5

We know that the recursive formula for geometric progression is given by :-

a_n=a_{n-1}r

Then , the recursive formula for the given geometric progression will be :-

a_n=a_n\times(-5)

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