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Shtirlitz [24]
3 years ago
6

The formula p = 2i + 2w means that the perimeter of a rectangle is equal to twice the sum of its length and its width.

Mathematics
2 answers:
marshall27 [118]3 years ago
7 0

Answer:

\boxed{i=\dfrac{P-2w}{2}=\dfrac{P}{2}-w}

Step-by-step explanation:

l - length

w - width

2l+2w=P\qquad\text{subtract 2w from both sides}\\\\2l-2w-2w=P-2w\\\\2l=P-2w\qquad\text{divide both sides by 2}\\\\\boxed{l=\dfrac{P-2w}{2}}\\\\or\\\\l=\dfrac{P}{2}-\dfrac{2w}{2}\\\\\boxed{l=\dfrac{P}{2}-w}

Sophie [7]3 years ago
3 0

p = 2i + 2w

Subtract 2w from each side:

p-2w = 2i

Divide both sides by 2:

p-2w / 2 = i

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