document.write( "Question 770422: Joe scored 85, 89, 86, and 93 on the first 4 testsin math. what must he score to average 90 \n" ); document.write( "
Algebra.Com's Answer #469516 by tommyt3rd(5050)![]() ![]() You can put this solution on YOUR website! if you mean that he will take one more test, and all the tests have the same weight then...\r \n" ); document.write( "\n" ); document.write( "(85+89+86+93+x)/5=90\r \n" ); document.write( "\n" ); document.write( "x+353=450\r \n" ); document.write( "\n" ); document.write( "x= 97\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |