Me plz which expression, when simplified, is equal to 7p? a) 9p – 2pq – 7p – 5p + 2pq b) 9p – 2pq – 7p + 5p – 2pq c) 9p + 2pq – 7p + 5p – 2pq d) 9p + 2pq + 7p + 5p – 2pq

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.

entering that problem on the tube might get you an answer