If the potential difference across a 30.0-ohm resistor is 10.0 volts, what is the current through the resistor?

Ithink the answer is d i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

The answer is  a.first and third quarters 

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.