At the north fair you earn 9 points for each bull's eye you hit, but you lose 7 points for each miss. after 25 tries, linda has 33 points. how many hits did she have?
a) 14
b) 13
c) 12
d) 11

Linda had (B) 13 hits. 13*9 - 12*7 would equal 33.

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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.