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Sidana [21]
3 years ago
13

The width of a rectangle is 3 units less than the length. The area of the rectangle is 28 units. What is the width, in units, of

the rectangle.
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0

Answer:

4

Step-by-step explanation:

Let's call the width W and the length L.

We know the width is 3 less than the length, so:

W = L - 3

And we know the area is 28, so:

28 = WL

If we solve for L in the first equation:

L = W + 3

And substitute into the second equation:

28 = W (W + 3)

28 = W² + 3W

0 = W² + 3W - 28

0 = (W + 7) (W - 4)

W = -7, 4

Since W can't be negative, W = 4 units.

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