document.write( "Question 865875: find the sum of the first 20 terms of the sequence defined by an=5n+4 \n" ); document.write( "
Algebra.Com's Answer #521974 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! an=5n+4 \n" ); document.write( "a1=9 \n" ); document.write( "a2=14 \n" ); document.write( "a3=19 \n" ); document.write( "S = ½(18 + (19)5)20 \n" ); document.write( "S = 1130 \n" ); document.write( "d=5\r \n" ); document.write( "\n" ); document.write( "an = 9 + 5(n - 1)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |