document.write( "Question 864382: the sum to n terms of a sequence of numbers is given as Sn=n/2(5n+9).
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document.write( "1.calculate the sum to 23 terms of the sequence
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document.write( "2.calculate the 23rd term \n" );
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Algebra.Com's Answer #521000 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Sn=n/2(5n+9) \n" ); document.write( "S23=23/2(5*23+9)\r \n" ); document.write( "\n" ); document.write( "S23 = 1426 \n" ); document.write( " \n" ); document.write( " |