Zach tried to solve an equation step by step. 4

3



4

3



+

2

1



4

5





=z−

2

1



=z−

2

1



+

2

1



=z



Step 1

Step 2



Find Zach's mistake.

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.

∠cbe and ∠deb are same-side interior angles.

i took the test

hard

step-by-step explanation:

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀