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posted by Jim on Sunday, April 29, 2012 at 11:20pm.
A geometric series with the first term 7 converges to 70. What does the common ratio equal? What does the second partial sum equal?
7/(1-r) = 70 1/10 = 1-r r = 9/10 S1 = 7 S2 = 7 + .63 = 7.63
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