document.write( "Question 719359: The width of a rectangular rug is one foot smaller than its length. The area of the rug is 30 square feet. Find the length and the width. Whats this in feet??? \n" ); document.write( "
Algebra.Com's Answer #441330 by mathworm7271(5)![]() ![]() You can put this solution on YOUR website! Let's say x is the length \n" ); document.write( "then x-1 is the width \n" ); document.write( "We know that Area=Length(width) \n" ); document.write( "So, we substitute... \n" ); document.write( "30=x(x-1) \n" ); document.write( "Use the Distributive property \n" ); document.write( "30=x^2-x \n" ); document.write( "Subtract 30 from each side \n" ); document.write( "0=x^2-x-30 \n" ); document.write( "Now we have to factor the Trinomial \n" ); document.write( "0=(x-6)(x+5) \n" ); document.write( "So that means either x-6=0 or x+5=0 \n" ); document.write( "Distribute and x=6 or x=-5 \n" ); document.write( "Since the length of a rug cannot be negative, x=6 \n" ); document.write( "So, the length is 6 and the width is 6-1 which is 5. \n" ); document.write( "Make sure you have the proper units (feet) \n" ); document.write( " |