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-6- -2n=3n -(6+5)
combine like terms
-6 +2n = 3n -11
subtract 2n from each side
-6 = n-11
add 11 to each side
-6 +11 = n
5 =n
Answer:
A. 
Step-by-step explanation:
Slope of PR = 
Where,


Slope of PR = 
Slope of RT = 
Where,


Slope of RT = 
Therefore, the proportion that can be used to show that the slope of PR = the slope of RT is:

You may recognize that ∆WYZ is a 3-4-5 right triangle. Without any work, then
c = 5
_____
If you don't remember that a right triangle with legs 3 and 4 has a hypotenuse of 5, you can compute it using the Pythagorean theorem.
c² = 3² + 4²
c² = 9 + 16 = 25
c = √25 = 5