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Guest
Guest
An angle is selected at random from the five angles and then replaced. A second selection is then made at random. (Thus, the same angle might be selected twice.) What is the probability that an acute angle is selected both times? The angles are as follows:
A = 50 degrees
B = 60 degrees
C = 90 degrees
D = 130 degrees
E = 40 degrees
the answer is 9/25
It appears that they take 3/5 and square it. Why?
A = 50 degrees
B = 60 degrees
C = 90 degrees
D = 130 degrees
E = 40 degrees
the answer is 9/25
It appears that they take 3/5 and square it. Why?