Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form. 5,\, 15,\, 45,\, ... 5,15,45,... This is sequence and the is equal to .

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.

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

the answer would be  

a.

3: 1

step-by-step explanation: