Find the area of a regular hexagon if given a side length of 1.9 to the square root of 3.

28.137 sq. units.

Step-by-step explanation:

Area of a regular hexagon is

where, a is the side length.

It is given that the side length of the regular hexagon is .

Substitute in the above formula.

Therefore, the area of regular hexagon is 28.137 sq. units.

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.