document.write( "Question 1207382: Going into the final exam,which will count as two-thirds of the final grade,Mike has test scores of 86,80,84,and 90.What score does Mike need on the final in order to earn a B,which requires an average score of 80? What does he need to earn an A,which requires an average of 90? \r
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document.write( "Let me see.\r
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document.write( "Let x = grade needed on final exam to earn a B.\r
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document.write( "(86 + 80 + 84 + 90 + x)/5 = 80\r
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document.write( "Let y = grade needed on final exam to earn an A.\r
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document.write( "(86 + 80 + 84 + 90 + y)/5 = 90\r
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document.write( "Is this correct? \n" );
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Algebra.Com's Answer #845238 by mccravyedwin(406)![]() ![]() You can put this solution on YOUR website! Going into the final exam,which will count as two-thirds of the final grade, \n" ); document.write( "Mike has test scores of 86,80,84,and 90.What score does Mike need on the final \n" ); document.write( "in order to earn a B,which requires an average score of 80? What does he need to \n" ); document.write( "earn an A,which requires an average of 90? \n" ); document.write( " \r\n" ); document.write( "For the final exam to count 2/3, to figure his score for the course, Mike must\r\n" ); document.write( "add his final exam grade 2 times and his test average only 1 time and divide by\r\n" ); document.write( "3.\r\n" ); document.write( "\r\n" ); document.write( "Let his required final exam grade be x\r\n" ); document.write( "\r\n" ); document.write( "His test average is\r\n" ); document.write( "\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |