PLEASE HELP AND SHOW THE WORK U DID PLEASs

A. 33° B. 52° | A. 55° B. 97° C. 83°

Step-by-step explanation:

triangle angles equal 180°

180 - (116 + 31) = 33° A

180 - (38 + 90) = 52° B

Problem 2.

28 + 53 = 81

180 - ( 81 + 44 ) = 55 A

180 - ( 55 + 28) = 97 B

180 - (53 + 44) = 83 C

( super sorry if it's wrong but I think this is right)

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.