Find the angle between u and v in radians.u = 9i, v = 9i - 8j

A. 0.84
B. 1.20
C. 1.56
D. 0.73


Answer: D

Mathematics

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A hypothetical management science problem requires us to find the cheapest "supercircuit" in a graph. Three algorithms are available: Algorithm 1, Algorithm 2, and Algorithm 3.Algorithm 3 never produces a supercircuit that is off by more than 10% from the cheapest supercircuit. The amount of time that it takes to carry out Algorithm 3 is: 1 second for a graph with 5 or less vertices, 30 seconds for a graph with 6 vertices,  for a graph with 7 vertices, and so on, increasing by 10 seconds every time we add a vertex (from 7 vertices on). Algorithm 3 is

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A. (0, -3) B. (-3, 0) C. No solution D. Infinitely many solutions

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A. $2222 B. $1800 C. $900 D. $720,000

Mathematics