A machine that burns trash uses a mixture of oil, gas, and diesel that is injected periodicly during the day. Gas is injected into the machine every 6 hours and diesel is injected four times a day, and the ratio of gas
to diesel is always 5 to 8. In order to maintain a stable mixture for burning, oil is always injected at the
same rate and amounts as the gas.
Given the total mixture of oil, gas, and deisel that the machine uses is 47.1 liters per day. Find the amount
of oil, gas, and diesel injected at each time during the day.

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.

u get 2 big as balls