document.write( "Question 979757: The sum of 40 consecutive integers is 100. What is the smallest of these 40 integers? \n" ); document.write( "
Algebra.Com's Answer #601011 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! 40 consecutive numbers add up to 100. \n" ); document.write( "The numbers have to start less than 1. The average is 2.5, so that is the middle of 40 integers. \n" ); document.write( "sum from -1 to -17 is -{n*(n+1)/2}=-153 \n" ); document.write( "numbers 0,1,2 add up to 3. \n" ); document.write( "Integers greater than 2 add up to 250. \n" ); document.write( "Another way of saying that is that we want consecutive numbers from 1 that add up to 253,\r \n" ); document.write( "\n" ); document.write( "n*(n+1)/2=253; n(n+1)=512 \n" ); document.write( "n^2+n-506=0; (n+23)(n-22)=0; n=22, -23, positive root only.\r \n" ); document.write( "\n" ); document.write( "The number at the top are 22 \n" ); document.write( "The number at the bottom is -17. \n" ); document.write( "Zero is the 40th number. \n" ); document.write( "The consecutive integers (40) are from -17 to 22.\r \n" ); document.write( "\n" ); document.write( "ANSWER: minus 17 is the smallest.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |