Homework Help: math

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?

math - Steve, Monday, April 30, 2012 at 12:12am
7/(1-r) = 70
1/10 = 1-r
r = 9/10

S1 = 7
S2 = 7 + .63 = 7.63

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