Write the number as an improper fraction.7
A. 
B. 
C. 
D. 
Answer: A
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Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
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B. 
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C. 
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D. 
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Solve the system of equations by Gaussian elimination. If there is an unlimited number of solutions, find two of them.3x + y + z = 1512x + 4y + 4z = 60
A. x = 0, y = 15, z = 0 B. Unlimited: x = 0, y = 15, z = 0; x = 5, y = 0, z = 0 C. Inconsistent D. x = 5, y = 0, z = 0
Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.sec 
= cos 
A. 0
B. 0, 
, ?, 
C. 
, 
, 
, 
, 
, 
, 
D. 
, 
Find all possible solutions to the problem.Liz has five skirts (black, brown, white, blue, and green) and five blouses (red, white, beige, pink, and black). She likes red and white together and likes the beige blouse with the brown skirt. She doesn't like the way a dark blouse and a dark skirt look together. She does not like wearing her white blouse with her black nor green skirts. Considering that she will match one blouse with each skirt, and one skirt with each blouse, what color blouse/skirt combinations will Liz have?
A. Blouse and Skirt pink white black brown beige green red black white blue B. Blouse and Skirt pink black beige brown red white white blue black green C. Blouse and Skirt pink black brown beige red white blue purple black green D. Blouse and Skirt pink black beige brown red blue white green black white