Anyone
based on the table above, how many marbles of each color are in the bag before any are drawn?
a blue 3 green 6
b blue 2 green 7
c blue 1 green 4
d blue 9 green 9

A- 3 B and 6 G. Why?
Look at the 1st row : BBB and the result: 3/9.2/8.1/7.
The question related to the answer (although not written), is : Find the probability of selecting  3 bleues RESPECTIVELY from the bag without REPLACEMENT, Since the Probability of the                                                   first choice =(favorable event/output)]/[(Total event/output)] 
Favorable = 3 Blue & Total = 9.P(1st choice) = 3/9. Hope you got it

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.