Solve.The cube has sides of length 4y5 feet. Find its volume. 
A. 64y125 cu ft
B. 12y15 cu ft
C. 12y125 cu ft
D. 64y15 cu ft
Answer: D
Mathematics
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Determine whether the given function satisfies a Laplace equation.f(x, y) = e10ysin 10x
A. Yes B. No
Mathematics
Find the vertex for the parabola whose equation is given.y = -(x - 1)2 + 9
A. (- 1, - 9) B. (1, 9) C. (- 1, 9) D. (9, - 1)
Mathematics
Solve the problem.The pH of a patient's blood was measured periodically during one week, and the measured values were 7.36, 7.37, 7.45, 7.42, and 7.45. Find the standard deviation and variance for the data. Round the results to the nearest thousandth.
A. s = 0.086, v = 0.007 B. s = 0.038, v = 0.001 C. s = 0.001, v = 0.001 D. s = 0.098, v = 0.010
Mathematics
Simplify. Assume that variables can represent any real number.
A. 27k2 B. 3k9 C. -3k2 D. 3k2
Mathematics