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Citrus2011 [14]

3 years ago

7

45 + 30 = 100 - w Answer: Explanation:

2 answers:

MA_775_DIABLO [31]3 years ago

7 0

Answer:

w = 25

Step-by-step explanation:

45+30 = 100 - w
75 = 100 - w
w = 100 - 75
w = 25

kirill115 [55]3 years ago

5 0

In order to work out “w”, you could begin by working backwards, starting with 100, then doing the inverse operation (subtracting 30 then subtracting 45).

100 - 30 = 70 - 45 = 25.

100 - 25 = 45 + 30

w = 25

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Answer:

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Perimiter: $P=2a+2b$

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Step-by-step explanation:

This is a problem of optimization with constraints.

We can define the rectangle with two sides of size "a" and two sides of size "b".

The area of the rectangle can be defined then as:

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To optimize we can derive the function and equal to zero.

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The minimum perimiter happens when both sides are of size 16 (a square).

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