The first thing we must do for this case is to define variables.
We have then:
P: pressure
A: Area of the sole of the shoe
Since the variation is inverse, we have an equation of the form:

We must find the value of k.
For this, we use the following data:
when the shoes have a sole area of 40 in ^ 2 The pressure is 4 lbs / in ^ 2
Substituting values we have:

From here, let's clear k:

Then, the equation is:
Answer:
The equation that relates these variables is:
Answer:
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Step-by-step explanation:
In order to find the total number of boxes, workout 100% of the boxes of cereal.
100% is 20% in 5 places,
Therefore 17×5 equals 85.
There are 85 boxes of cereal in total...
The solution is
We group like terms, to obtain;
Simplify to get,
We further simplify to get;
This can also be rewritten as;
Or
This can be represented on the number line as shown in the diagram.
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