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
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Algebra.Com's Answer #112092 by mangopeeler07(462)\"\" \"About 
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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
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\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
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\n" ); document.write( "\n" ); document.write( "(w+2)(w+3+2)=108\r
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\n" ); document.write( "\n" ); document.write( "Simplify the parentheses
\n" ); document.write( "(w+2)(w+5)=108\r
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\n" ); document.write( "\n" ); document.write( "FOIL
\n" ); document.write( "w^2+7w+10=108\r
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\n" ); document.write( "\n" ); document.write( "Subtract 10 from both sides
\n" ); document.write( "w^2+7w=98\r
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\n" ); document.write( "\n" ); document.write( "Subtract 98 from both sides
\n" ); document.write( "w^2+7w-98=0\r
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\n" ); document.write( "\n" ); document.write( "Factor
\n" ); document.write( "(w+14)(w-7)=0\r
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\n" ); document.write( "\n" ); document.write( "Solve for w
\n" ); document.write( "w=-14 or 7\r
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\n" ); document.write( "\n" ); document.write( "Width is positive, so w=7\r
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\n" ); document.write( "\n" ); document.write( "Dimensions of the photo: w and w+3
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\n" ); document.write( "\n" ); document.write( "Answer:
\n" ); document.write( "Dimensions of the photo: 7in and 10in
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\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
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\n" ); document.write( "\n" ); document.write( "Length=w+100
\n" ); document.write( "Width=w
\n" ); document.write( "Diagonal=500\r
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\n" ); document.write( "\n" ); document.write( "Half of the rectangle= a right triangle with sides w+100, w, and 500 as the hypotenuse\r
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\n" ); document.write( "\n" ); document.write( "Pythagorean theorem:
\n" ); document.write( "w^2+(w+100)^2=500^2\r
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\n" ); document.write( "\n" ); document.write( "Simplify
\n" ); document.write( "w^2+w^2+200w+10000=250000\r
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\n" ); document.write( "\n" ); document.write( "Combine like terms
\n" ); document.write( "2w^2+200w+10000=250000\r
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\n" ); document.write( "\n" ); document.write( "Subtract 250000 from both sides
\n" ); document.write( "2w^2+200w-240000=0\r
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\n" ); document.write( "\n" ); document.write( "Factor
\n" ); document.write( "2(w^2+100w-120000)=0\r
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\n" ); document.write( "\n" ); document.write( "Factor again
\n" ); document.write( "2(w+400)(w-300)=0\r
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\n" ); document.write( "\n" ); document.write( "Solve for w
\n" ); document.write( "w=-400 or 300\r
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\n" ); document.write( "\n" ); document.write( "Width is positive, so w=300
\n" ); document.write( "Length=w+100
\n" ); document.write( "Width=w
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\n" ); document.write( "Answer:
\n" ); document.write( "Length=400ft
\n" ); document.write( "Width=300ft
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\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
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\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
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\n" ); document.write( "\n" ); document.write( "Simplify
\n" ); document.write( "x^2+8x+16=x^2+4x+4+264 \r
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\n" ); document.write( "\n" ); document.write( "Combine like terms on each side
\n" ); document.write( "x^2+8x+16=x^2+4x+268 \r
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\n" ); document.write( "\n" ); document.write( "Subtract 4x from both sides
\n" ); document.write( "x^2+4x+16=x^2+268 \r
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\n" ); document.write( "\n" ); document.write( "Subtract 268 from both sides
\n" ); document.write( "x^2+4x-252=x^2 \r
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\n" ); document.write( "\n" ); document.write( "Subtract x^2 from both sides
\n" ); document.write( "4x-252=0 \r
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\n" ); document.write( "\n" ); document.write( "Add 252 to both sides
\n" ); document.write( "4x=252 \r
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\n" ); document.write( "\n" ); document.write( "Divide both sides by 4
\n" ); document.write( "x=63 \r
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\n" ); document.write( "\n" ); document.write( "consecutive odd integers= x, x+2, x+4
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\n" ); document.write( "Answer: 63, 65, and 67
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