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We can do this by using the Pythagorean theorem

The pythagorean theorem states that the hypotenuse (longest side of a triangle) in a right triangle, squared, is equal to the sum of the other 2 sides of the triangles, squared.

It's expressed as so:

where c is the hypotenuse and a and b are the other 2 sides.

Therefore,

Square root of 180 is:

13.416407865 or 13.4

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.

(3x-8) or (3x+8)

step-by-step explanation: