document.write( "Question 322889: If the 3rd and 7th term of G.P are 81 and 16 respectively.Find the first 5th term of the G.P \n" ); document.write( "

Algebra.Com's Answer #231148 by Edwin McCravy(20086) $\"\"$ $\"About$

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document.write( "If the 3rd and 7th term of G.P are 81 and 16 respectively.\r\n" );
document.write( "Find the first 5th term of the G.P\r\n" );
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document.write( "Look at the subsequence of b's:\r\n" );
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document.write( "We use the formula:\r\n" );
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document.write( "The common ratio r for the subsequence is the same\r\n" );
document.write( "as the common ratio for the original whole sequence.\r\n" );
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document.write( "So we multiply or divide by  as necessary to fill in\r\n" );
document.write( "the blanks:\r\n" );
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document.write( "To find  we divide  by :\r\n" );
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document.write( "To find  we divide  by :\r\n" );
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document.write( "To find  we multiply  by :\r\n" );
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document.write( "To find  we multiply  by :\r\n" );
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document.write( "To check we'll go ahead and find \r\n" );
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document.write( "We can find it either by multiplying  by  \r\n" );
document.write( "or dividing  by \r\n" );
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document.write( "If we find a[6] by multiplying  by  \r\n" );
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document.write( "If we find a[6] by dividing  by  \r\n" );
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document.write( "So it checks.\r\n" );
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document.write( "Answers:\r\n" );
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document.write( "Edwin

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