At what points is the given function continuous?f(x, y) = 
A. All (x, y) such that x ? y
B. All (x, y)
C. All (x, y) ? (0, 0)
D. All (x, y) such that x ? - y
Answer: D
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Solve the problem.Form a relative frequency distribution table with three classes for the numbers:19, 20, 24, 25, 29,19, 20, 25, 29, 20,30, 34, 35, 39, 30,35, 30
A. 
B. 
C. 
D. 
Find the probability.In a certain college, 33% of the physics majors are ethnic minorities. A random sample of 10 physics majors is chosen. Find the probability that no more than 6 are ethnic minorities. Round to the nearest ten-thousandth.
A. 0.9846 B. 0.913 C. 0.0547 D. 0.9815
Perform the indicated operation.(2x2 + 8) - (10x2 - 6)
A. -8x2 + 14 B. 12x2 + 2 C. -8x2 + 2 D. 12x2 + 14
Find the equations of the system shown on the graphing calculator screen.10
-10
A. y = 0.4x - 4.6 y = -0.3x - 5.9 B. y = 2x + 1 y = -0.3x - 5.9 C. y = 0.2x + 5.4 y = 3x + 11 D. x + y = 1 x - 3y = -9