60% of the student in Mr. Reed's class wear glasses. if 15 students wear glasses , how many student are in Mr. Reeds class?

25

Step-by-step explanation:

If times 4 with 15 to get 60%

Then divide 100% with 4 to get 25 students

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.

range is infinite on both x and y axis positive and negative

step-by-step explanation: