Plz help What point do we get when we recent a across the x axis

Write and solve a real word problem that involves determining distance on a coordinate plane

Arectangle has a perimeter of 20 cm. the length, x cm, of one side of this rectangle is uniformly distributed between 1 cm and 7 cm. find the probability that the length of the longer side of the rectangle is more than 6 cm long.

Lines b and c are parallel. what is the measure of angle 6? m6 = 45° m6 = 54° m6 = 117° m6 = 126°