Answer: 12
Step-by-step explanation: Since the angles are supplements, 3x + x - 20 = 180. Solving this, we find that x = 50, and 3x = 150. Since dodecagons have interior angles of 150 degrees, the answer is 12 sides.
Answer:
(x + 3)(x - 3)
Step-by-step explanation:
Use difference of squares property:
(x + 3)(x - 3)
Answer:
~966 apartments
Step-by-step explanation:
Answer:
b option
x<-4 is the correct answer
Answer:
should definitely be 28.56
