I need help asap

Question

for the point P(15,-13) and Q(20,-8), find the distance d(P,Q) and the coordinates of the midpoint M of the segment PQ

Answer 1

distance = sqrt ( (20-15)^2 + (-13 - -8)^2)

= sqrt( 5^2 +(-5)^2)

= sqrt( 25 + 25)

= sqrt(50)

= sqrt(25*2)

= 5*sqrt(2)

midpoint ( (15+20)/2, (-13+-8)/2)

( 35/2, -21/2)

(17.5, -10.5)