Mathematics, 27.01.2021 22:50, Calumworthy6046

What is the sum of the first seven terms of the geometric series where a1 = 10 and r = -2? Hint: SR
a1(1 – ya)
r71, where a, is the first term and r is the common ratio.
1-
O S7 = 640
O S7= -430
O S7 = 430
OS7= -213

What is the sum of the first seven terms of the geometric series where a1 = 10 and r = -2?

Hint:

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What is the sum of the first seven terms of the geometric series where a1 = 10 and r = -2? Hint: SR...