What is mArc S U?

49°
77°
98°
161°

77°

Step-by-step explanation:

Find the diagram atached

From the figure

m<T = 1/2(arcRU - arcSU)

m<T = 1/2(119-arcSU)

21 = 1/2(119-arcSU)

21*2 = 119-arcSU

42 = 119-arcSU

arcSU = 119 - 42

arcSU = 77degrees

Hence the meaasure of arcSU is 77degrees

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.

25/6 hope it : )

step-by-step explanation: