document.write( "Question 152516This question is from textbook elementary and intermediate algebra concepts and applications
\n" );
document.write( ": Can somebody please help me im stuck\r
\n" );
document.write( "\n" );
document.write( ". Solve the following problems involving applications of polynomials.
\n" );
document.write( "a. A photo is 3 inches longer that 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?
\n" );
document.write( "b. A rectangular parking lot is 100 ft longer than it is wide. Determine the dimensions of the parking lot if it measures 500 ft diagonally.
\n" );
document.write( "c. Three consecutive odd integers are such that the square of the third is 264 more than the square of the second. Find the three integers.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #112092 by mangopeeler07(462)![]() ![]() ![]() You can put this solution on YOUR website! A. A photo is 3 inches longer that 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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Dimensions of the photo: w and w+3 \n" ); document.write( "Dimensions of photo plus the border: w+2 and w+3+2 \n" ); document.write( "Area of photo plus border: (w+2)(w+3+2)=108\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(w+2)(w+3+2)=108\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify the parentheses \n" ); document.write( "(w+2)(w+5)=108\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "FOIL \n" ); document.write( "w^2+7w+10=108\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 10 from both sides \n" ); document.write( "w^2+7w=98\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 98 from both sides \n" ); document.write( "w^2+7w-98=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Factor \n" ); document.write( "(w+14)(w-7)=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solve for w \n" ); document.write( "w=-14 or 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Width is positive, so w=7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Dimensions of the photo: w and w+3 \n" ); document.write( "-----------------------------------------------------------------------\r \n" ); document.write( "\n" ); document.write( "Answer: \n" ); document.write( "Dimensions of the photo: 7in and 10in \n" ); document.write( "----------------------------------------------------------------------- \n" ); document.write( "B. A rectangular parking lot is 100 ft longer than it is wide. Determine the dimensions of the parking lot if it measures 500 ft diagonally. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Length=w+100 \n" ); document.write( "Width=w \n" ); document.write( "Diagonal=500\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Half of the rectangle= a right triangle with sides w+100, w, and 500 as the hypotenuse\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Pythagorean theorem: \n" ); document.write( "w^2+(w+100)^2=500^2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify \n" ); document.write( "w^2+w^2+200w+10000=250000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Combine like terms \n" ); document.write( "2w^2+200w+10000=250000\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 250000 from both sides \n" ); document.write( "2w^2+200w-240000=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Factor \n" ); document.write( "2(w^2+100w-120000)=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Factor again \n" ); document.write( "2(w+400)(w-300)=0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solve for w \n" ); document.write( "w=-400 or 300\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Width is positive, so w=300 \n" ); document.write( "Length=w+100 \n" ); document.write( "Width=w \n" ); document.write( "--------------------------------------------------------------------------- \n" ); document.write( "Answer: \n" ); document.write( "Length=400ft \n" ); document.write( "Width=300ft \n" ); document.write( "--------------------------------------------------------------------------- \n" ); document.write( "C. Three consecutive odd integers are such that the square of the third is 264 more than the square of the second. Find the three integers. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "consecutive odd integers= x, x+2, x+4 \n" ); document.write( "(x+4)^2=(x+2)^2+264 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify \n" ); document.write( "x^2+8x+16=x^2+4x+4+264 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Combine like terms on each side \n" ); document.write( "x^2+8x+16=x^2+4x+268 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 4x from both sides \n" ); document.write( "x^2+4x+16=x^2+268 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract 268 from both sides \n" ); document.write( "x^2+4x-252=x^2 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract x^2 from both sides \n" ); document.write( "4x-252=0 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Add 252 to both sides \n" ); document.write( "4x=252 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Divide both sides by 4 \n" ); document.write( "x=63 \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "consecutive odd integers= x, x+2, x+4 \n" ); document.write( "---------------------------------------------------------------------------- \n" ); document.write( "Answer: 63, 65, and 67 \n" ); document.write( " |