document.write( "Question 238907: A student averages 84 on five tests if the student recieved 84,82,81,and 79 on the first four exams what grade did the student recieve on the fifth exam? \n" ); document.write( "
Algebra.Com's Answer #175546 by unlockmath(1688)\"\" \"About 
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Hello,
\n" ); document.write( "To find the average of numbers, we need to add all the numbers and divide by 5.
\n" ); document.write( "Since one of the numbers is unknown we'll represent by x so the equation will be:
\n" ); document.write( "(84+82+81+79+x)/5 = 84 Combine like terms gives us:
\n" ); document.write( "(326+x)/5 = 84 Multiply both sides by 5
\n" ); document.write( "326 + x = 420 Subtract both sides by 326 gives us:
\n" ); document.write( "x = 94 There you go, he needs a 94 on the test to have an average of 84.
\n" ); document.write( "RJ Toftness
\n" ); document.write( "www.math-unlock.com
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