document.write( "Question 574606: Tom received 89, 94, 86, and 96 on the first algebra tests. What grade must he receive on his last test to have an average of 92? \n" ); document.write( "
Algebra.Com's Answer #369170 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Let x = last test grade\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(89+94+86+96+x)/5 = 92\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(365+x)/5 = 92\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "365+x = 92*5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "365+x = 460\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 460-365\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 95\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So Tom must receive a 95 on the last test. \n" ); document.write( " |