document.write( "Question 921137: I have an 84.7 average in a class. Tests are 50% of our grade, what is the lowest I can get on a test in order to keep my 85 average. \n" ); document.write( "
Algebra.Com's Answer #558726 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! 0.5*0.847 + 0.5x = 0.85\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "0.4235 + 0.5x = 0.85\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "0.5x = 0.85 - 0.4235\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "0.5x = 0.4265\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 0.4265/0.5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 0.853\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You need to get an 85.3% on the test (lowest you can go) to keep your 85% average. \n" ); document.write( " \n" ); document.write( " |