4 4 -2 7.
2
4
If A = -7 -3
2
and B = 5
-9
5
3
find -2A + 7B.
N
2
10
-9
5-10-5

correct answer is :find -2A + 7B.

N

2

10

-9

5-10-5

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.

depending on others is critical to survival. my source is apex!

step-by-step explanation: