True or false: the midpoint of a given line segment must lie on the given line segment?

The heaviest 16% of all men in weight weigh more than how many pounds ?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

If you answer 2+2 you will get over 80 points