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polet [3.4K]
2 years ago
11

PLEASE HELP!!!

Mathematics
1 answer:
ivann1987 [24]2 years ago
7 0

Answer:

an = 0.5^n−1

Step-by-step explanation:

Use the formula :

a_n = a_1r^n−1

To identify the geometric sequence.

an = 0.5^n−1

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