document.write( "Question 848509: The sum to n terms of an arithmetic series is sn=n/2 +(7n+15).determine the 6th tern and how many terms of the series must be added to give a sum of 425 \n" ); document.write( "
Algebra.Com's Answer #513498 by richwmiller(17219)\"\" \"About 
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Are you sure it is Sn=n/2 +(7n+15) plus and not Sn=n/2*(7n+15) times?
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