a: -1220
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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
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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Do you know the correct answer?
What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?
a: -1220
a: -1220
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