SOLUTION: My book says that the sum of the first 10 terms of the sequence {300,150,75,...} is {{{75(2^10-1)/2^7}}}
Why is this? Using the formula {{{ A1(1-r^n)/(1-r) }}} I got {{{3
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Question 973329: My book says that the sum of the first 10 terms of the sequence {300,150,75,...} is
Why is this? Using the formula I got
Am I wrong? Or is my answer simply in a different form? If so, please explain how I can arrive at the answer similar to the one found in my book.
Much Thanks.
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Your result seems perfectly consistent with what is found in http://en.wikipedia.org/wiki/Geometric_series, under Sum, Formula section of the article. You can check any typical intermediate algebra book, also.
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