The measure of an angle a is one-fifth of its supplement. Find a.
A. 75°
30°
C. 150°
D. 45°
​

Three coins are flipped. what is the probability that there will be at least two tails?

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.