document.write( "Question 808191: on her last two math tests. leah had scores of 83 and 92. what must leah score on the next test to average a 90 on all three test \n" ); document.write( "

Algebra.Com's Answer #486826 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
two ways to do this
\n" ); document.write( "90+7-2=95
\n" ); document.write( "other longer way
\n" ); document.write( "(83+92+x)/3=90
\n" ); document.write( "(x+175)/3=90
\n" ); document.write( "x+175=270
\n" ); document.write( "x=95\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );