Decide if the "personal a" is necessary in the following sentence. Tengo dos amigos. The "personal a" is necessary. The "personal a" is not necessary.

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?

What is it called when someone gets sick from eating food contaminated with germs or toxins? a. potentially hazardous food b. ptomaine poisoning c. foodborne illness d. raw food

It takes longer to fly an airplane against a with it