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MAVERICK [17]
3 years ago
8

If the length of the given rectangle is increased by 7 and the width is decreased by 3, what is the rectangle's perimeter

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

Answer:

For a given length l and width w, the new perimeter is....

2(l + w) + 8

Step-by-step explanation:

Currently, the rectangle's perimeter is 2(l + w). You knew that.

Now, the question asked you to change l into l + 7, and w into w - 3. Substitute them, so we get

Perimeter New = 2(l + 7 w - 3) = 2 (l + w + 4)

Then, I chose to "pull out" + 4, so I multiply it with the 2. Hence, we get

Perimeter New = 2 (l + w) + 8

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