document.write( "Question 1055431: The average of 10 numbers is 13. The average of the first 6 numbers is 14 and
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document.write( " that of the last 6 numbers is 11. If the sixth number is 1.5 times the fifth number
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document.write( " find the average of those two numbers.
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document.write( "What would be the average of the first four and the last four number. \n" );
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Algebra.Com's Answer #670661 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! 1. \n" ); document.write( "2. \n" ); document.write( "3. \n" ); document.write( "4. \n" ); document.write( "From 1, \n" ); document.write( " \n" ); document.write( "From 2, \n" ); document.write( " \n" ); document.write( "Subtracting, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "From 3, \n" ); document.write( " \n" ); document.write( "Subtracting again, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "So the average is, \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "Going back to this equation, \n" ); document.write( " \n" ); document.write( "Substitute from 4, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "So then, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "From 2, \n" ); document.write( " \n" ); document.write( "Substituting, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "So the average of the first four is, \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "Similarly, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |