Three transformations will be performed on triangle ABC. Which set of transformations will always produce a congruent triangle?

A. Dilation, rotation, translation

B. Rotation, reflection, dilation

C. Rotation, translation, reflection

C (Rotation, Translation and Reflection )

Step-by-step explanation:

A congruence transformation is the type that won't change the shape of the triangle.

They are the reflections(flips), rotations(turns) and translations(slides).

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.