Carrie and Omar are comparing the international calling plans on their cell phones. On her plan, Carrie pays $1 just to place a call and $2 for each minute. When Omar makes an international call, he pays $4 to place the call and $1 for each minute. A call of a certain duration would cost exactly the same under both plans. What is the duration? What is the cost?

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.

h= 12 inches

step-by-step explanation:

step-by-step explanation:

2 1/2 feet

step-by-step explanation: