document.write( "Question 329425: the length of a rectanlge is twice the width. The area is 128yd^2. I know that A=2(L)+2(w). But with this equation wouldn't it be calcutaed differently? given the equation -0.4x^2+11.2x+14 for an event selling tickets. I know that the graph would open downward because of the negative 0.4x. Now it is asking the# if days since the 1st. day of tickets sold, when the sales peaked and how many sold that day. I'm assuming that the quadratic equation should apply here? \n" ); document.write( "
Algebra.Com's Answer #236131 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! the length of a rectanlge is twice the width. The area is 128yd^2. I know that A=2(L)+2(w). But with this equation wouldn't it be calcutaed differently? \n" ); document.write( "-------------- \n" ); document.write( "2L + 2W is the perimeter \n" ); document.write( "Area = L*W \n" ); document.write( "L = 2W \n" ); document.write( "A = 2W*W = 128 \n" ); document.write( "W^2 = 64 \n" ); document.write( "W = 8 \n" ); document.write( "L = 16 \n" ); document.write( "----------- \n" ); document.write( " given the equation -0.4x^2+11.2x+14 for an event selling tickets. I know that the graph would open downward because of the negative 0.4x. Now it is asking the# if days since the 1st. day of tickets sold, when the sales peaked and how many sold that day. I'm assuming that the quadratic equation should apply here? \n" ); document.write( "That's not an equation, there's no equal sign.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |