document.write( "Question 840618: Determine the 30th term of the sequence -10, -15, -20... \n" ); document.write( "
Algebra.Com's Answer #508109 by TheInstructor(29)![]() ![]() ![]() You can put this solution on YOUR website! Yo\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-10, -15, -20 \n" ); document.write( "Notice the common difference? This is an A.P with a common difference of -5.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "d = -5 \n" ); document.write( "a = -10\r \n" ); document.write( "\n" ); document.write( "Tn= a+(n-1)d \n" ); document.write( "T30= -10 + (30-1) x -5 \n" ); document.write( "Therefore T30 = -155\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Hope that helped. \n" ); document.write( " |