Mathematics, 05.10.2019 04:00 Kennethabrown09

What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?
a: -1220
b: 605
c: -15
d: -605

Answers: 1

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What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?
a: -1220