So the trapezoid has 2 parallel sides making segments AD and BC transversals
Therefore making angle c and angle b add up to 180
(180-3x) + 3x + 180-9x +9x
180 +12x = 360
180= 12x
x= 15
Answer:
choosing 1 blue marble, choosing one white marble not replacing it and choosing a blue and lastly choosing one white marble.
Step-by-step explanation:
Use google and get some ideas. Also look up some non famous scientists and get some info about them