can you please help with questions 4 and 6? and explain thank you!

Answer:
4. is 6.708
Step-by-step explanation:
1. (-1,3) (5,0) x1-x2 and y1-y2
so it would be -1-5 is |-6| and 3-0 is |3|
2. square both 6 and 3 / 6x6=36 / 3x3=9
3. Add them : 36+9=45
4. Sqrt 45: 6.70820393…