document.write( "Question 460585: Find the sum of the arithmetic series where a[1]=7, n=31, and a[n]=127 \n" ); document.write( "
Algebra.Com's Answer #315972 by edjones(8007)![]() ![]() You can put this solution on YOUR website! S=n/2(a[1]+a[n]) \n" ); document.write( "=31/2(7+127) \n" ); document.write( "=31/2 * 134 \n" ); document.write( "=31*67 \n" ); document.write( "=2,077 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |