For the point P(-23,14) and Q(-18,19)​, find the distance​ d(P, Q) and the coordinates of the midpoint M of the segment PQ.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?