Answer: GN runs between a vertex and the midpoint of the opposite side, so it is a median.
HK is an altitude because it is perpendicular to base GJ and H is a vertex.
ML is not perpendicular to a base although it does bisect a base, but anyway, neither M nor L is a vertex: ML is neither altitude nor median.
Step-by-step explanation:
"A median of a triangle is a line segment joining a vertex to the midpoint of the opposing side, bisecting it. ... Each median divides the area of the triangle in half; hence the name" Wikipedia.
Seth travels with constant speed <span><span>v=<span>dt</span></span><span>v=<span>dt
</span></span></span><span> then </span><span><span>v=<span>157
1</span>=<span>x3600</span></span><span>v=<span>157.1</span>=<span>x3600</span></span></span><span>where </span><span>xx</span><span> is the distance traveled in 1 hour.
So his velocity would be x miles/hour.
By computing </span><span><span>x=<span><span>3600⋅1</span>57.1</span>=63.047</span><span>x=<span><span>3600⋅1</span>57.1</span>=63.047
</span></span><span> Seth travels at a speed of </span><span><span>63.047miles/hour</span></span>