ms. Cho bought 1/3 yard of wool and 5/8 of oil. the wool cost $9 per yard and the silk $12 per yard. how much did Ms. Cho spend
in all?
2 answers:
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This is one of the two tired triangles of trig you should memorize. An isosceles right triangle has its sides in ratio . That means the hypotenuse is the square root of two times either side.
Answer: C
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