document.write( "Question 1206544: Find the sum of the first 8 terms of a geometric series if the first term is 10 and the common ratio is 3. \n" ); document.write( "
Algebra.Com's Answer #844093 by ikleyn(52792)\"\" \"About 
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\n" ); document.write( "Find the sum of the first 8 terms of a geometric series if the first term is 10 and the common ratio is 3.
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document.write( "Use the formula for the sum of the first n terms of a GP \r\n" );
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document.write( "    \"S%5Bn%5D\" = \"a%5B1%5D%2A%28%28r%5En-1%29%2F%28r-1%29%29\" = \"10%2A%28%283%5E8-1%29%2F%283-1%29%29\" = \"10%2A%286560%2F2%29\" = 10*3280 = 32800.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "On geometric progressions,  see introductory lessons\r
\n" ); document.write( "\n" ); document.write( "    - Geometric progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for geometric progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on geometric progressions\r
\n" ); document.write( "\n" ); document.write( "    - Word problems on geometric progressions\r
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