Answer:
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tjhStep-by-step explanation:
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Given :
Three points , P(4, 3, 4), Q(2, 1, 3), R(2, 7, 0) .
To Find :
The length of sides .
Given :
We know , length of two points P(x,y ,z) and Q(a,b,c) is given by :

Length of PQ :

Length of QR :
:
Length of RP :

Hence , this is the required solution .
From my interpretation I believe Amy is being allowed to fly 500 metres or higher if that the case then the equation is:
h is the height that amy is fly
h >= 500
if its 500m or lower then it just the opposite
h <= 500
The given expression is

First, we use the distributive property to get rid of the parenthesis.

Now, we sum 2x on each side

As you can observe, the variables were eliminated and the resulting equation is true. This means the equation has infinite solutions.