document.write( "Question 284241: A rectangular flower bed with the width 12 ft. and length 15 ft. is going to have a walkway of uniform width on all sides. If area of the walkway is 90 sq. ft., how wide is the walkway? \n" ); document.write( "
Algebra.Com's Answer #206250 by nyc_function(2741)![]() ![]() You can put this solution on YOUR website! Find x.\r \n" ); document.write( "\n" ); document.write( "Here's another way to solve for x.\r \n" ); document.write( "\n" ); document.write( "Let x = width of walkway\r \n" ); document.write( "\n" ); document.write( "(12 - 2x)(15 - 2x) = total area or 180\r \n" ); document.write( "\n" ); document.write( "180 - 54x + 4x^2 = 180\r \n" ); document.write( "\n" ); document.write( "180 - 180 - 54x + 4x^2 = 0\r \n" ); document.write( "\n" ); document.write( "-54x + 4x^2 = 0\r \n" ); document.write( "\n" ); document.write( "x = 27/2\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |