10=3x+1-4
how do i solve this problem?

x = 13/3

Step-by-step explanation:

First- Combine 1 and -4, which equals -3      (10=3x-3)

Second- Add 3 to both sides      (13=3x)

Third- Divide both sides by 3      (13/3=x)

And so x = 13/3

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.