Which of the following facts if true would allow you to prove that lines l and m are parallel

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Whats begin with t, ends with t has t in it

The tendency to seek out individuals who represent the same level of physical attractiveness as ourselves is explained as