Find the angle between u and v in radians.u = 10i + 3j + 10k, v = 5i + 9j + 8k
A. 1.14
B. 0.98
C. 0.59
D. 1.50
Answer: C
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Solve the problem. Round to the nearest tenth unless indicated otherwise.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind
of wire ? A. 368 ohms B. 375 ohms C. 372.5 ohms D. 387 ohms
Use the elimination method by addition to find the solution for the following system.
A. x = -4, y = 6 B. x = -4, y = 5 C. x = -5, y = 6 D. The system is inconsistent.
Solve the system using the inverse matrix method.
A. x = 7, y = -17, z = -5; (7, -17, -5) B. x = -16, y = -6, z = 7; (-16, -6, 7) C. x = 15, y = 25, z = 13; (15, 25, 13) D. x = 9, y = -5, z = -1; (9, -5, -1)
Find a number to replace the question mark so that the given fractions are equivalent.
= 
A. 30 B. 6 C. 60 D. 300