document.write( "Question 842947: James researched these nutrition facts:
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document.write( "1 g of soy milk has 0.005 g of carbohydrates and 0.030 g of protein.
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document.write( "1 g of vegtables has 0.14 g of carbohydrates and 0.030 g of protein.\r
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document.write( "James wants his lunch to have 50 g of carbohydrates and 20 g of protein.
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document.write( "how many grams of soy milk and vegtables does he need? \n" );
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Algebra.Com's Answer #507790 by josgarithmetic(39626) ![]() You can put this solution on YOUR website! x for grams of milk(soy) and y for grams of vegetables.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Account for carbohydrates:(0.005)x+(0.14)y=50 \n" ); document.write( "5x+140y=50000 \n" ); document.write( "x+28y=10000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Account for protein: (0.030)x+(0.030)y=20 \n" ); document.write( "3x+3y=2000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You may want to try adjustment of these for use of the Elimination Method, the system being: \n" ); document.write( "---------------------- \n" ); document.write( "x+28y=50000 \n" ); document.write( "---------------------- \n" ); document.write( "3x+3y=2000 \n" ); document.write( "----------------------\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "3x+84y=300000 \n" ); document.write( "- \n" ); document.write( "3x+3y=2000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "81y=300000-2000=298000 \n" ); document.write( "y=298000/81 \n" ); document.write( "y=3679 grams of vegetables (probably wrong)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x+28y=50000 \n" ); document.write( "x=50000-28y \n" ); document.write( "x=50000-28(3679) \n" ); document.write( "x=-53012 Which obviously makes no sense.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Either I made a mistake which I have not found (after rechecking the whole solution once) or one of your given datum is wrong. This would otherwise be a reasonably simple two-variable linear system exercise. \n" ); document.write( " |