Answer:
PL and LM
Step-by-step explanation:
The definition of perpendicular is two lines that create a 90 degree angle. There are a lot of those in a rectangular prism. One of them is PL and LM, because they intersect to create a right angle.
Answer: Yes, they equal
Explanation: (4 + 6) x 3 = 30 ; 10 x 3 = 30, 30 = 30
6 minutes/60minutes = 0.1 hrs
45miles/0.1hour = 450 miles per hour or mph