Find the limit.
2 sin 
A. 0
B. 4
C. -2
D. 2
Answer: C
Mathematics
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Solve the problem.A continuous random variable X has PDF f(x) = 
x2(5 - x), 
Find the variance of the random variable X.
A. 
B. 
C. 2
D. 1
Mathematics
Find the area.
A. 112 m2 B. 14 m2 C. 28 m2 D. 224 m2
Mathematics
Simplify the exponential expression. Write any negative exponents as positive exponents. Assume all variables represent positive real numbers.(16x8y4)1/2
A. 4x4y2 B. 4x8y2 C. x4y2 D. 4x4y
Mathematics
Find the zero of the linear function.f(x) = 5x + 45
A. 9 B. 0 C. -9 D. 45
Mathematics