Help me with this question I don’t really understand it:(

True or false? a circle could be circumscribed about the quadrilateral below.

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

M.xyz =radians. covert this radian measure to its equivalent measure in degrees.