Evaluate the expression.
A. 362,880
B. 40,320
C. 336
D. 5040
Answer: B
Mathematics
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Compute r, the linear coefficient of correlation, for the given data.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below.
A. 0.109 B. 0.867 C. 0.548 D. 0.714
Mathematics
Find the constant of variation, k. t varies directly with r and inversely with s; t = 3 when r = 21 and s = 28
A. k = -4
B. k = - 
C. k = 
D. k = 4
Mathematics
Differentiate.f(x) = 
e3x
A. ex/3
B. e3x
C. 
e3x
D. 3e3x
Mathematics
Find the focus and the directrix of the parabola.(y - 6)2 = -12(x + 4)
A. Focus: (-7, 6); directrix: y = -1 B. Focus: (-7, 6); directrix: x = -1 C. Focus: (-1, 6); directrix: x = -7 D. Focus: (-7, 6); directrix: x = -4
Mathematics