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dolphi86 [110]
3 years ago
15

A rectangle is drawn so that the width is I feet

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
7 0

Answer:

Length = 4 feet

Step-by-step explanation:

Let the length of a rectangle be x.

Width is 1 feet shorter than the length, b = x-1

The area of the rectangle is 12 sq feet.

The area of a rectangle is given by :

A = length × width

So,

x(x-1)=12\\\\x^2-x-12=0\\\\x^2-4x+3x-12=0\\\\x(x-4)+3(x-4)=0\\\\(x+3)(x-4)=0\\\\x=-3\ and \ x=4

Neglecting the negative side, the length of the rectangle is equal to 4 feet.

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