document.write( "Question 888275: Find the sum of all 15 terms in a sequence 7, 3, -1, -5 ...tn, \n" ); document.write( "
Algebra.Com's Answer #537234 by luke94(89)![]() ![]() ![]() You can put this solution on YOUR website! firstly note your sequence is arithmetic as it is decreasing by -4. \n" ); document.write( "write out your sequence: 7,3,-1,-5,-9,-13,-17,-21,-25,-29,-33,-37,-41,-45,-49 \n" ); document.write( "add them all up and your answer should be = -315 \n" ); document.write( " |