document.write( "Question 203573: 1.Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50.
\n" ); document.write( "a) Set up an equation for the perimeter involving only L, the length of the rectangle.
\n" ); document.write( " Answer:
\n" ); document.write( "b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.\r
\n" ); document.write( "\n" ); document.write( "2.5x+4y=12 for y
\n" ); document.write( " Answer:
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\n" ); document.write( "Show your work here:
\n" ); document.write( " b) When graphed, this equation would be a line. By examining your answer to part a, what is the slope and y-intercept of this line?
\n" ); document.write( " Slope = ______
\n" ); document.write( " Y-intercept = _____
\n" ); document.write( " c) Using your answer from part a, find the corresponding value of y when x = 16. \r
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Algebra.Com's Answer #153595 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
1.Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50.
\n" ); document.write( "a) Set up an equation for the perimeter involving only L, the length of the rectangle.
\n" ); document.write( "Let length be L ; then width = L-5
\n" ); document.write( "Perimeter = 2(length + width)
\n" ); document.write( "Answer: P(L) = 2(L + L-5) = 2(2L-5) = 4L-10 inches
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\n" ); document.write( "b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.
\n" ); document.write( "4L-10 = P
\n" ); document.write( "L = (P+10)/4
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\n" ); document.write( "2.5x+4y=12 for y
\n" ); document.write( "4y = -5x + 12
\n" ); document.write( "Answer: y = (-5/4)x + 3\r
\n" ); document.write( "\n" ); document.write( "========================================\r
\n" ); document.write( "\n" ); document.write( "Show your work here:
\n" ); document.write( "b) When graphed, this equation would be a line. By examining your answer to part a, what is the slope and y-intercept of this line?
\n" ); document.write( "Slope = -5/4______
\n" ); document.write( "Y-intercept = 3
\n" ); document.write( "----_____
\n" ); document.write( "c) Using your answer from part a, find the corresponding value of y when x = 16.
\n" ); document.write( "y = (-5/4)*16 + 3
\n" ); document.write( "y = -20 + 3
\n" ); document.write( "y = -17
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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