document.write( "Question 323764: Please help me solve this: A certain arithmetic sequence has $\"a%5B51%5D=23\"$
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Algebra.Com's Answer #231724 by Edwin McCravy(20056) $\"\"$ $\"About$

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Please help me solve this: A certain arithmetic sequence has $\"a%5B51%5D=23\"$
\n" ); document.write( "and $\"a%5B101%5D=-127\"$ . Find $\"a%5B1%5D\"$ , $\"d\"$ , $\"a%5Bn%5D\"$ , and $\"a%5B78%5D\"$
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document.write( "Use  \r\n" );
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document.write( "Substitute , \r\n" );
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document.write( "Substitute , \r\n" );
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document.write( "So we have this system of equations:\r\n" );
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document.write( "Solve that system of equation by substitution or addition.\r\n" );
document.write( "If you don't know how post again asking how.  The\r\n" );
document.write( "solution is , \"\"=\"\"}}}\r\n" );
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document.write( "Therefore substituting those in\r\n" );
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document.write( "Substitute n=78\r\n" );
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document.write( "Edwin

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