-3x-9=-15 solve for x

2

Work: Okay, this is simple, but needed to be taken one step at a time. First, you need to get x by itself, so you add the nine on both sides, canceling on the side it's currently on. So, the new equation is -3x = -6. To get the x by itself even more, we divide -3 on both sides, and again, cancelling it on the side it's currently on. So, the answer is x = 2. I hope this helps, and stay safe! :)

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.

what