A truck with a heavy load drove from Boston to New York at 50 mph. After dropping of the load, it returned from New York to Boston with a speed of 70 mph. What is the average speed of the truck for the whole trip?

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2