document.write( "Question 252239: Assume a ≥ b ≥ c ≥ d If the mean of a , b , c and d, is 8 and the median of
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document.write( "a , b , c and d, is 5 then a + d is\r
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document.write( "a. 6 b. 11 c. 22 d. 27 e Impossible to Determine \n" );
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Algebra.Com's Answer #184053 by Theo(13342) You can put this solution on YOUR website! the median is 5 means that (b + c) / 2 = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this means that (b + c) = 10 assuming you multiply both sides of that equation by 2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the mean is 8 means that (a + b + c + d)/4 = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting for (b + c) = 10, we get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(a + 10 + d) / 4 = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply both sides of this equation by 4 to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a + d + 10 = 32\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 10 from both sides of this equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a + d = 22\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your answer would be selection c (22).\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |