document.write( "Question 458663: A large rectangular movie screen in an Imax theater has an area of 9,191 square feet. Find the dimensions of the screen if it is 10 feet longer than it is wide. \n" ); document.write( "
Algebra.Com's Answer #314632 by mananth(16946)![]() ![]() You can put this solution on YOUR website! width =x ft \n" ); document.write( "length = x+10 feet\r \n" ); document.write( "\n" ); document.write( "Area = 9191 sq.ft \n" ); document.write( "Width =x ft \n" ); document.write( "Length =(x+10) \n" ); document.write( "Area = x*(x+10) \n" ); document.write( "9191 =x^2+10 x \n" ); document.write( "x^2+10x -9191 =0 \n" ); document.write( "Find the roots of the equation by quadratic formula \n" ); document.write( " \n" ); document.write( "a= 1 b= 10 c= -9191 \n" ); document.write( " \n" ); document.write( "b^2-4ac= 100-36764 \n" ); document.write( "b^2-4ac= 36864 \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "x1=(-10+192)/2 \n" ); document.write( "x1=91 \n" ); document.write( "x2=(-10 -192) / 2 \n" ); document.write( "x2= -101 \n" ); document.write( "Ignore negative value \n" ); document.write( "x = 91 feet \n" ); document.write( "length = 91+10 = 101 \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |