Agroup of children and their parents went to the skating rink. there were a total of 30 people in the group. the cost for each adult was $12 and the cost for each child was $8. the total amount paid was $280. let a represent the number of adults and c represent the number of children. complete the system of equations below. then, solve the system to determine how many adults and how many children were in the group.

there are 17 kids and 12 adults  17x8=136      12x12= 144    136+144=280

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.

do i do it on a graph?

step-by-step explanation: