On a Saturday a movie theater sells 785 tickets they sell kid tickets for $2 and adult tickets for $5. that Saturday they make $3280. How many of each kind of ticket did they sell?

570 adults and 215 children

Step-by-step explanation:

did this assignment and got it right

5a + 2c = 3280    where a is adults and c is children

subtraction eliminates c, find a

3a + 0 = 1710

a = 1710/3

a = 570 adult and then you have to subtract 785-570= 215 children

d

step-by-step explanation:

d

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.