For the given probability density function, over the stated interval, find the requested value.f(x) = 
, over the interval [2,8]. Find E(x).
A. 5
B. 
C. 10
D. 28
Answer: A
Mathematics
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For an arc length s, area of sector A, and a central angle ? of a circle of radius r, find the indicated quantity.r = 34.33 ft, ? = 34.216°, find A
A. 354.9 ft2 B. 706.8 ft2 C. 351.9 ft2 D. 703.8 ft2
Mathematics
Write the expression as a complex number in the form a + bi.7 + 
A. 5 B. 9 + i C. 7 + 2i D. 7 - 2i
Mathematics
Apply row operations to the augmented matrix to find the solution to the linear system.
A. x = 2, y = -3, z = 1 B. x = 1, y = -2, z = 4 C. x = 2, y = 3, z = 5 D. x = -2, y = -3, z = 3
Mathematics
Simplify. Assume that no denominator is zero.
A. p8
B. p-2
C. p-8
D. 
Mathematics