Factor the sum or difference of two cubes.x3 - 343
A. (x - 7)(x2 + 7x + 49)
B. (x + 7)(x2 - 7x + 49)
C. (x + 343)(x2 - 1)
D. (x - 7)(x2 + 49)
Answer: A
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Write in terms of the cofunction of a complementary angle.cot 
A. cos 
B. sin 
C. tan 
D. tan 
Find an equation of variation in which the following are true.x varies inversely as y2, and x = 18 when y = 7.
A. x = 882y2
B. x = 
C. x = 
D. x = 
Provide an appropriate response.If we apply the quadratic formula and find that the value of b2 - 4ac equals zero, what can we conclude?
A. The equation has one rational solution. B. The equation has no real solutions. C. The equation has one irrational solution. D. The equation has two rational solutions.
Identify any dictator and all dummies in the following weighted voting scheme. Suppose the voters in the order listed are A, B, C, D, and E.
{50: 35, 18, 5, 3, 1} a. A is a dictator, and B, C, D, and E are dummies. b. There is no dictator, and C, D, and E are dummies. c. There is no dictator, and B, C, D, and E are dummies d. A is a dictator, and C, D, and E are dummies. e. A is a dictator, and D and E are dummies.