Question

What was the hiker's average speed for the entire hike? :D (Image attached) (I mark Brainliest Answers!)

Answer 1

Answer:

D

Step-by-step explanation:

Answer 2

     Using the Definition of average speed, we have:

$\Delta v= \frac{\Delta S}{\Delta t} \\ \Delta v= \frac{(4+6+4+6)}{12-9} \\ \Delta v= \frac{20}{3} \\ \boxed {\Delta v=6,7 km/h}$

Obs: approximate results

Letter D

If you notice any mistake in English, please let me know, because I'm not native.