Martin Island is 240 miles away from Phillips Island. A Martin Speedboat departs Martin Island and travels at x mph toward Phillips Island. One hour
later, a Phillips Speedboat departs Phillips Island and travels towards Martin
Island at twice the speed of the Martin Speedboat. Two hours after the
Martin Speedboat has departed from Martin Island, the boats meet. How
fast, in miles per hour, is the Phillips Speedboats traveling?
А
60
B
80
С
100
D
120
160
m

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Step-by-step explanation:

it would be B 80

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.