document.write( "Question 698593: the manager of a fish store has water that is 10% salt and water that is 25% salt. he needs 5 gallons of water that is 20% salt.\r
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document.write( "a)write a system of linear equations that you can use to determine how many gallons of each type of salt water the manager should combine. define your variables.\r
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document.write( "b)solve the system and determine how many gallons of each type of salt water the manager should combine and show your work.\r
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document.write( "Here's what I've got so far:
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document.write( "x = 10% salt
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document.write( "y = 25% salt \r
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document.write( "System of equations:
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document.write( "x + y = 5
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document.write( ".10x + .25y = (.20 x 5 = 1)\r
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document.write( "Solving:
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document.write( " -10x + (-10y)= -50
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document.write( "(.10x + .25y = 1)100 = 10x + 25y = 100
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document.write( " -----------------
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document.write( " 0x + 15y = 50
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document.write( " y = 3.33
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document.write( "x= 5-3.33= 1.67
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Algebra.Com's Answer #430860 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! That's correct, and that's the way to do these. \n" ); document.write( "---------- \n" ); document.write( "You can use \n" ); document.write( "10x + 25y = 20*5 , using the %'s instead of the decimal values. \n" ); document.write( " |