Answer: Richter Scale
Step-by-step explanation:
I'm ASSUMING that we're talking about Three Ordered Ordered Pair Solutions.
If so, the answer is (0,−1),(1,2),(2,5).
An easy way is to work out their speed. Speed = distance/time.
First part: Speed = 330/5.5 = 60 mph
Finally, the second part: time = distance / speed
So time = 720/60 = 12 hours
Answer: x=90
Step-by-step explanation: 11 x 7.5 =90
Answer:

Step-by-step explanation:
Lines form 180 degrees on either side. The negative sign simply implies direction (clockwise instead of counter-clockwise), which is negligible as 180 is exactly half of 360 so you'd form the same line.