PLS help me i am so confused and i am lazy and clueless, A boat travels 3/4 hour at 8mph and then 1/3 hour at 12mph. What distance does the boat travel? HELP M

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.

y=x+9

?

step-by-step explanation:

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2