document.write( "Question 935177: After three 25-point quizzes, you have 58 points.\r
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document.write( "How many points do you need to score on your next 25-point quiz to have a mean score of 20 points?\r
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document.write( "Would a mean score of 20 points after 4 quizzes be greater than or less than your mean score after 3 quizzes?\r
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document.write( "Your score on each quiz is a whole number. Is it possible that yuor mean score does not change after the fourth quiz? Explain. \n" );
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Algebra.Com's Answer #568320 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! After three 25-point quizzes, you have 58 points. \n" ); document.write( "How many points do you need to score on your next 25-point quiz to have a mean score of 20 points? \n" ); document.write( "let x = your score on the 4th quiz \n" ); document.write( " \n" ); document.write( "58 + x = 20*4 \n" ); document.write( "x = 80 - 58 \n" ); document.write( "x = 22 \n" ); document.write( ": \n" ); document.write( "Would a mean score of 20 points after 4 quizzes be greater than or less than your mean score after 3 quizzes? \n" ); document.write( "58/3 = 19.333, more \n" ); document.write( ": \n" ); document.write( "Your score on each quiz is a whole number. \n" ); document.write( " Is it possible that your mean score does not change after the fourth quiz? Explain. No, the 4th score average will be an in integer, since the total of the first 3 scores is 58, an integer \n" ); document.write( " |