Find the direction angles of the vector. Round to the nearest degree, if necessary.v = 4i + 12j - 6k
A. ? = 72°, ? = 19°, ? = 118°
B. ? = 89°, ? = 86°, ? = 92°
C. ? = 72°, ? = 23°, ? = 117°
D. ? = 73°, ? = 31°, ? = 115°
Answer: D
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Find the inverse of the function.f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = 
Identify the sampling technique used to obtain a sample.Of all the fishermen on a lake, the game warden chooses to check the fishing license only of the first person that returns to the boat dock.
A. Systematic sampling B. Cluster sampling C. Convenience sampling D. Stratified sampling
Use a graphing utility to graph the equation.3x2 - 4xy + 3y2 - 2x + 5y = 10
A. 
B. 
C. 
D. 
Evaluate the square roots first, then combine the results. Use a calculator or a square root table when needed. Round to the nearest thousandth.
+ 
A. 45.000 B. 8.557 C. 6.856 D. 10.557