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Answer:
X = 80°
Step-by-step explanation:
55+45=100
180-100=80 angles in a triangle=180°
So Y = 80
and Y=X because opposite angles around a point are equal
<span>The correct answer is 1/78.
Explanation<span>:
There are 2 orange marbles out of 13 total marbles, so the probability of your first marble being orange is 2/13.
After this one is drawn, since it is not returned, the probability of getting a second orange marble is 1/12, since there is only 1 orange marble left out of 12 total marbles.
This gives us the total probability 2/13(1/12)=2/156=1/78.</span></span>
