You drive a car 620 m to the east, then 300 m to the north. What is the magnitude of your displacement including units, and estimate the direction of your displacement. [?° north of east]

Answermuch larger;

Ithink the answer would be a 

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.

Answavelength; amplitude;