Greg sets his watch for the correct time on wednesday. one week later, he finds his watch lost 3 1/4 minutes. if this continues what will be the overall change in time after 8 weeks.

if he lost 3.25 minutes in 1 week, he'll lose 8 times that in 8 weeks, so:

8 x 3.25 = 26

Thus, he'll lose 26 minutes over 8 weeks.

4

step-by-step explanation:

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.