document.write( "Question 819732: John has taken 4 math tests and has an average of 85. What must he get on the 5th test to have an average of 88?
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Algebra.Com's Answer #493233 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! ( 4(85) + t )/5 = 88 \n" ); document.write( "4(85) + t = 88(5) \n" ); document.write( "340 + t = 440 \n" ); document.write( "--- \n" ); document.write( "t = 100 \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Calculate and graph the linear regression of any data set: \n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( " |