document.write( "Question 354641: the first difference of a sequence is 2, 3, 4, 5,... The sum of the first two terms of the original sequence is 16. What first three terms of original sequence? \n" ); document.write( "
Algebra.Com's Answer #253378 by Edwin McCravy(20059)![]() ![]() You can put this solution on YOUR website! the first difference of a sequence is 2, 3, 4, 5,... The sum of the first two terms of the original sequence is 16. What first three terms of original sequence? \n" ); document.write( " \r\n" ); document.write( "We have this information. Put blanks for the unknown values:\r\n" ); document.write( "\r\n" ); document.write( "n an 1st diffs \r\n" ); document.write( "1 a1 \r\n" ); document.write( " 2\r\n" ); document.write( "2 a2 \r\n" ); document.write( " 3\r\n" ); document.write( "3 __ \r\n" ); document.write( " 4\r\n" ); document.write( "4 __ \r\n" ); document.write( " 5\r\n" ); document.write( "5 __\r\n" ); document.write( " 6\r\n" ); document.write( "6 __ \r\n" ); document.write( "\r\n" ); document.write( "The sum of the first two terms of the original sequence is 16\r\n" ); document.write( "\r\n" ); document.write( "so a1 + a2 = 16\r\n" ); document.write( "and the difference of a2 - a1 is 2\r\n" ); document.write( "\r\n" ); document.write( "So we have the system:\r\n" ); document.write( "\r\n" ); document.write( "\n" ); document.write( " |