You have 4 marbles and you can get 3 combinaisons of two marbles for each one.
So 4*3 = 12.
There are 12 outcomes. The answer would be D.
Hope this helps !
Photon
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The answer is 13 hope I helped
send a picture of the question instead okay I don't understand
Answer:
140°
Step-by-step explanation:
180°=(4x-20)+×
180° = 5x-20
200°=5x
x=40°
140°+40°=180°