document.write( "Question 1029022: The first term of a geometric progression is 5 and the fifth term is 1280, the common ratio is 4\r
\n" ); document.write( "\n" ); document.write( "Find the eighth term of the sequence
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Algebra.Com's Answer #644135 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "The first term of a geometric progression is 5 and the fifth term is 1280, the common ratio is 4\r
\n" ); document.write( "\n" ); document.write( "Find the eighth term of the sequence
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The 1st term and common ratio (r) are enough to determine the 8th term. No other term, not even the 5th, is needed.\r
\n" ); document.write( "\n" ); document.write( "Specific term of a GP: \"a%5Bn%5D+=+a%5B1%5Dr%5E%28n+-+1%29\"
\n" ); document.write( "\"a%5B8%5D+=+5%284%29%5E%288+-+1%29\" ------- Substituting 8 for n, 5 for \"a%5B1%5D\", the 1st term, and 4 for r, the common ratio
\n" ); document.write( "\"a%5B8%5D+=+5%284%29%5E7\"
\n" ); document.write( "8th term or \n" ); document.write( "
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