document.write( "Question 852680: the sum to n terms of a sequence of numbers is given as:\r
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document.write( "Sn=n/2(5n+9). or Sn=(n/2)(5n+9)\r
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document.write( "find the 20th term of this sequence \n" );
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Algebra.Com's Answer #513558 by Kingsley(15)![]() ![]() You can put this solution on YOUR website! Sn=20/2( 5[20] + 9 ) \n" ); document.write( "20/2(100+9) \n" ); document.write( "20( 50 + 9 ) \n" ); document.write( "ans.=1180 \n" ); document.write( " |