What is the supplementary angle of 30 degrees? Incorrect answer selected
A.60 degrees
B.90 degrees
C.150 degrees
D.120 degrees

Plz me i need i will give a brain

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14