Answer
X= -1
Step-by-step explanation:
Answer:
Parallel lines
Step-by-step explanation:
Line BC:

Line AD:

Adding both equations, in this case, gives us the point at which the lines intersect:

Since zero will never equal fourteen, the equation above means that lines BC and AD will never intersect. When two lines have no point in common, they are said to be parallel lines.
Answer:
60
Step-by-step explanation:
1. 60*4=240
2. 60*6=360
3. the answer is 60
Answer:
34 classes
Step-by-step explanation:
First, subract 180 from 1200. You should get 1020. then do 1020/30. So 34 classes can watch the performance of 180 students.