document.write( "Question 1128005: A gp has 8 terms.its first and last term are 0.3 and 38.4 and its common ratio is 2 find the sum of the terms of the gp
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Algebra.Com's Answer #744478 by ikleyn(52790)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Use the standard formula for the sum of the first 8 terms of a GP.\r\n" );
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document.write( "You are given the first term and the common ratio - it is enough info to use this formula.\r\n" );
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document.write( "The given info about the value of the 8-th term is NOT NECESSARY and is EXCESSIVE - you can omit it and forget about it - \r\n" );
document.write( "it is not used in the solution.\r\n" );
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document.write( "The sum is\r\n" );
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document.write( "    S = \"0.3%2A%28%282%5E8-1%29%2F%282-1%29%29\" = \"0.3%2A%282%5E8-1%29\".\r\n" );
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document.write( "Use your calculator.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On geometric progressions,  see the 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
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\n" ); document.write( "\n" ); document.write( "    - Word problems on geometric progressions\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic
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\n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-II
\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r
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