Find the midpoint M of the line segment joining the points P = (4, -7) and Q = (-8, -3). M =(,)

What percent of 18 is 24? and plz explain thx.

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Find the interior angle of a regular polygon which has 6 sides