a ferry shuttles people from one side of a river to the other. the speed of the ferry is still water is 25 mi/h. the river flows directly north at 9 mi/h. if the ferry heads directly west, what are the ferrys resultant speed and direction

The Terry's resultant speed is 27mi/h

Direction of ferry=20°

Step-by-step explanation:

(-25,0) + (0, 9) = (-25, - 9) is the vector representing the movement of the ferry

Speed of ferry = sqrt[ (-25) ^2 + (-9) ^2]

Speed = sqrt (-625 + (-81))

Speed = sqrt (-706)

Speed=26.57mi/h

Nearest tenth, speed = 27mi/h

Tanz° = (-9/-25)

Tanz° = 0.36

Z° = tan^-1 0.36

Z = 19.80°

Nearest tenth, z=20°