Solve for the angle marked with a “?".

A 31
B 24
C 79
D 125

C. 79

Step-by-step explanation:

I think it's that because it's either C or D.

but that's too close to be D and it looks right for C. I thinks C is right, in my opinion.

It cant be A or B because that would be in between 20 and 35.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

tube or goog would be a great resource to with that question