document.write( "Question 813329: A farmer has 3000 feet of wire to enclose a rectangular field. He plans to fence the entire area and then subdivide it by running a perpendicular fence across the middle. Find the dimensions of the field that would enclose the maximum area . What is the maximum area?\r
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document.write( "Can you please help me out? Thanks so much in advance:) \n" );
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Algebra.Com's Answer #489641 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! A = Lw \n" ); document.write( "P = 2L + 2w = 3000 \n" ); document.write( "2L + 2w = 3000 \n" ); document.write( "2L = 3000 - 2w \n" ); document.write( "L = 1500 - w \n" ); document.write( "--- \n" ); document.write( "A = Lw \n" ); document.write( "A = (1500 - w)w \n" ); document.write( "--- \n" ); document.write( "A(w) = -w^2 + 1500w + 0 \n" ); document.write( "--- \n" ); document.write( "the above quadratic function is represented by the quadratic equation in standard form, with a=-1, b=1500, and c=0 \n" ); document.write( "--- \n" ); document.write( "to find the maximum area A(w), plug this: \n" ); document.write( "-1 1500 0 \n" ); document.write( "into this: https://sooeet.com/math/quadratic-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Answer 1: \n" ); document.write( "the maximum point of the above quadratic equation is: ( w= 750, A(w)= 562500 ) \n" ); document.write( "--- \n" ); document.write( "so the maximum area that can be enclosed is: 562500 sq.ft \n" ); document.write( "--- \n" ); document.write( "now, to find the L and w dimensions of the maximum area, remember this equation from above: \n" ); document.write( "A(w) = -w^2 + 1500w + 0 \n" ); document.write( "--- \n" ); document.write( "we used that equation to maximize Area, but as a side effect we also got w for the max area, from the max point of the quadratic equation ( w= 750, A(w)= 562500 ) \n" ); document.write( "--- \n" ); document.write( "Answer 2: \n" ); document.write( "w for maximum area = 750 \n" ); document.write( "L for maximum area = 1500 - w = 1500 - 750 = 750 \n" ); document.write( "so the maximum area has dims: w=750, L=750 feet \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Convert fractions, decimals, and percents: \n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php \n" ); document.write( "--- \n" ); document.write( "Calculate and graph the linear regression of any data set: \n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( " |