document.write( "Question 161947: A photo is 3 inches longer than it is wide. A 2-inch border is placed around the photo making the total area of the photo and border 108 square inches. What are the dimensions of the photo? \r
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document.write( "I know the length and the width are are 12 and 9. I assume that I would subtract 2 from both of these in for the answer. I just don't know how to write it in the form of an equation. \n" );
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Algebra.Com's Answer #119338 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! actually, subtract 4 (2 at each end)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "dimensions of photo __ x and x+3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "with border __ x+4 and x+7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(x+4)(x+7)=108 __ x^2+11x-80=0 __ factoring __ (x+16)(x-5)=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x+16=0 __ x=-16 __ negative value not realistic\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x-5=0 __ x=5 __ substituting __ x+3=8 \n" ); document.write( " |