Solve for x and y

Already solved for x if you can please go over it and correct me if wrong

x = 28

y = 83

Step-by-step explanation:

We can use ratios to solve

18           21

 =

24            x

Using cross products

18x = 24*21

Divide each side by 18

x = 24*21/18

x =28

The angles must be equal

<M = <I

83 = y

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.