document.write( "Question 230560: A student’s test scores are 86, 72, 85, and 90. What is the lowest score that
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document.write( "the student can get on the next test and still have a test average (mean) of at
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document.write( "least 80? \n" );
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Algebra.Com's Answer #170730 by edjones(8007)![]() ![]() You can put this solution on YOUR website! Let x=the next test score to give an average of 80 \n" ); document.write( "(86+72+85+90+x)/5=80 \n" ); document.write( "(86+72+85+90+x)=400 \n" ); document.write( "333+x=400 \n" ); document.write( "x=67 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |