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OpenStudy (anonymous):
Can someone just check and see if I am right Use the formula for the sum of the first n terms of a geometric sequence to solve. Find the sum of the first 8 terms of the geometric sequence: -8, -16, -32, -64, -128,. . .
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OpenStudy (anonymous):
so first I divided -16/-8 = 2
OpenStudy (anonymous):
then i used|dw:1348151246411:dw|
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