Two supplementary angles are congruent. which equation gives the measure in degrees, d, of each angle?
(a) d + 2d = 180

(b) 2d = 180

(c) d + d = 90

(d) no equation because supplementary angles cannot be congruent.

c

step-by-step explanation:

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

the first option i believe

step-by-step explanation: