Answer:
3km/h and the speed of the ship is 21 km/h.
Step-by-step explanation:
The nearest hundred for 3,486 is 3,500 since it would round up because it is closer to that hundred.
63degrees
Step-by-step explanation:
there are multiple ways to do this
for one, angle a = angle e (corresponding angles)
angle f + angle e = 180 degrees (angles on a straight line)
angle f = 180 degrees - angle e where angle e = angle a = 117degrees
so angle f = 63 degrees.