Given that d(x) = 2x, select all of the following that are true statements.
d(x) is a function.
x is the dependent variable.
d(6) = 3
d(x) is a direct variation.
d(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).

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.

coins of silver or gold

step-by-step explanation: