document.write( "Question 1082123: what is the sum of the series 7+22+37...+292? \n" ); document.write( "
Algebra.Com's Answer #696209 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! It is (n/2)(a1+an) \n" ); document.write( "n-1=285/15, the common difference=19 \n" ); document.write( "n=20 \n" ); document.write( "10*(7+292)=2990 \n" ); document.write( " |