document.write( "Question 248944: We have these word problems to do and they are so difficult for me to complete. Once I find the equations I can pretty much finish the problem but finding the equations is proving to be challenging. Please help.\r
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document.write( "Word Problem: A rancher can affors 300 feet of fencing to build a corral that's divided into two equal rectangles. What dimensions will maximize the corral's area?\r
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document.write( "I'm given a picture where the length is 2x and the width is y and the hint from my teacher was to use the distance formula. I'm completely lost. Thank you in advance for your help. \n" );
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Algebra.Com's Answer #181461 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Word Problem: A rancher can afford 300 feet of fencing to build a corral that's divided into two equal rectangles. \n" ); document.write( " What dimensions will maximize the corral's area? \n" ); document.write( "I'm given a picture where the length is 2x and the width is y \n" ); document.write( ": \n" ); document.write( "I have no idea why you would use distance formula, perhaps he meant the perimeter formula \n" ); document.write( ": \n" ); document.write( "The fence equation \n" ); document.write( "2(2x) + 3y = 300 \n" ); document.write( "4x + 3y = 300 \n" ); document.write( "3y = (300 - 4x) \n" ); document.write( "y = 100 - \n" ); document.write( ": \n" ); document.write( "Area = L * W \n" ); document.write( "A = 2x * y \n" ); document.write( "Replace y with(100- \n" ); document.write( "A = 2x(100- \n" ); document.write( "A = 200x - 2x( \n" ); document.write( "A = 200x - \n" ); document.write( ": \n" ); document.write( "A quadratic equation, the max area occurs at the axis of symmetry \n" ); document.write( "The formula for that: x = -b/(2a) \n" ); document.write( "In this equation a=-8/3; b=200 \n" ); document.write( "x = \n" ); document.write( "x = \n" ); document.write( "x = -200 * \n" ); document.write( "x = +37.5 \n" ); document.write( ": \n" ); document.write( "Find y: \n" ); document.write( "y = 100 - \n" ); document.write( "y = 100 - \n" ); document.write( "y = 100 - 50 \n" ); document.write( "y = 50 ft \n" ); document.write( "; \n" ); document.write( "Since the dimensions are are 2x by y, max area occurs when: \n" ); document.write( "2(37.5) = 75 ft is the length and 50 ft is the width \n" ); document.write( ": \n" ); document.write( "Check the perimeter (fence length) \n" ); document.write( "2(75) + 3(50) = \n" ); document.write( "150 + 150 = 300 \n" ); document.write( "; \n" ); document.write( "; \n" ); document.write( "C \n" ); document.write( " |