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George built a rectangular pen for his rabbit such that the length is 7 ft. less than twice the width. If the perimeter is 40 ft., what are the dimensions of the pen
Step 1. Let l = w-7 length of rectangle and let w be the width
Step 2. Let P = 40 ft be the perimeter. Perimeter means adding the 4 sides of a rectangle. So,
Step 3. Add 14 to both sides of equation to get 4w by itself
Step 4. Divide 4 to both sides of equation
Step 5. w = 13.5 is the width of the rectangle.
Check P=4w-14+2w=4(13.5)-14=54-14=40 So w = 13.5 and l= 6.5 is the solution.
Hope the above steps were helpful. Good luck in your homework and studies!
Hope you understood and followed the steps. Good luck in your studies. Dr J
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