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anonymous
 3 years ago
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anonymous
 3 years ago
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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0pretty sure you have to use the partial sums formula for 8

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0do u know formulae for sum of finite and infinite terms in a geometric sequence??

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0It's a geometric series a + ar + ar^2 + ... with a=1 and r = 3/2. Plug into the formula

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0http://en.wikipedia.org/wiki/Geometric_progression if u have finite geometric progession the sum is a1(q^n1)/(q1) if u have infinite geometric progresion the formula is a1/(1r) where where a1 is the first therm r is the common ratio (u multyply all therms in progresion )
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