document.write( "Question 738203: the average of six consecutive in integers in increasing order of size is 9.5. what is he average of the last 3 integers? \n" ); document.write( "
Algebra.Com's Answer #450725 by mananth(16949) You can put this solution on YOUR website! let the numbers be x,x+1,x+2,x+3,x+4,x+5\r \n" ); document.write( "\n" ); document.write( "Total = 6x+15\r \n" ); document.write( "\n" ); document.write( "numbers = 6\r \n" ); document.write( "\n" ); document.write( "average = 9.5 = (6x+15)/6\r \n" ); document.write( "\n" ); document.write( "multiply by 6 \n" ); document.write( "57=6x+15 \n" ); document.write( "-15 \n" ); document.write( "42=6x \n" ); document.write( "/6 \n" ); document.write( "x=7\r \n" ); document.write( "\n" ); document.write( "the numbers are 7,8,9,10,11,12\r \n" ); document.write( "\n" ); document.write( "10+11+12=33\r \n" ); document.write( "\n" ); document.write( "33/3=11\r \n" ); document.write( "\n" ); document.write( "average of last three numbers is 11 \n" ); document.write( " |