document.write( "Question 605399: Evaluate the arithmetic series where t1=42, tn=146, and n=14.
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Algebra.Com's Answer #381672 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Sn = (n*(t1+tn))/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "S14 = (14*(42+146))/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "S14 = (14*(188))/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "S14 = 2632/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "S14 = 1316\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the 14th partial sum is 1316 \n" ); document.write( " |