Answer:

Step-by-step explanation:
The formula of a distance between two points:

We have two points (1, -5) and (-3, 6). substitute:

Answer:
Now, I ain't tryin' to sound mean or standoff-ish but I'm pretty sure Wikipedia could answer this question for you
Answer:
Name: FE
Length: 13
Step-by-step explanation:
The total length is 34, so you would do 34-21, which equals 13.
Answer:
Use photo math, it will explain it all in different forms