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puteri [66]
3 years ago
9

A rectangle with an area of 240 in2 has a length 10 inches shorter than five times its width. Which equation could be used to so

lve for the length of the rectangle?
Mathematics
2 answers:
almond37 [142]3 years ago
4 0
L = 5W - 10
5W = L + 10
W = 1/5(L + 10)
Area = L x W
240 = L(1/5(L + 10)
L^2 + 10L = 240(5) = 1200
L^2 + 10L - 1,200 = 0
Lyrx [107]3 years ago
3 0

Answer:

The equation which can be used to solve for the length of the rectangle :  x² - 2x - 48 = 0

Step-by-step explanation:

Let width of the rectangle be x inches

Now, The rectangle has length 10 inches shorter than five times its width

⇒ Length of rectangle = 5x - 10

Now, Area of rectangle is given to be : Area = 240 inches²

Also, Area of the rectangle is given by the formula : Area = Length × Width

⇒ 240 = (5x - 10) × x

⇒ 5x² -10x = 240

⇒ 5x² - 10x - 240 = 0

⇒ x² - 2x - 48 = 0

Therefore, The equation which can be used to solve for the length of the rectangle :  x² - 2x - 48 = 0

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