A cruise ship left Port 54 and traveled south at an average speed of 25 mph. A container ship left at the same time and traveled in the opposite direction with an average speed of 28 mph. How long does the container ship need to travel before the ships are 477 mi. apart?

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: