In the regular octagon shown below, which of the following is the minimum angle of rotation about center point C will carry the figure onto itself? 1) 15°
2) 30°
3) 45°
4) 90°

4)90˚

Step-by-step explanation:

(90˚ is more towards the middle

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.

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x