Answer:
Midpoint of (-1,-5) and (-5,7) is (-3,1)
Midpoint of (5,-2) and (-4,2) is (0.5,0)
Step-by-step explanation:
Use the midpoint formula
range = largest - smallest
= 22 - (-15)
= 22 + 15
= 37
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An irrational number is a number that can't be written as a simple fraction while a rational number is a number that can be written as the ratio of two integers, that is, as a simple fraction. So in this case we have the number 2 which is ration, and we can multiply it by an irrational number
such that the product is an irrational number. So any irrational number will meet our requirement because the product of any rational number and an irrational number will lead to an irrational number. For instance:

In order to form a triangle, the third side must be at least greater than the difference of the other two sides
4 - 3 = 1 So the third side must be greater than 1 foot and the third side must be less than the sum of the other two sides
4 + 3 = 7 So, the third side must be less than 7
1 < third side < 7