Find the area of the right triangle

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

What can you determine about the solutions of this system