Answer:
It would be undefined if the line is vertical.
Step-by-step explanation:
Answer:
4x+(-3y)
Step-by-step explanation:

- (-)(-)=(+)
- (+)(-)=(-)
- (-)(+)=(-)
- (+)(+)=(+)

Answer:
180
Step-by-step explanation:
Since the type of trapezoid is not listed, I cannot really explain, sorry :/
Answer:
60km
Step-by-step explanation:
They travel 30km in the first hour, then turn back and travel the same 30km backwards.
Answer:
true
Step-by-step explanation: