Write the complex number in rectangular form.5.09(cos 100.3° + i sin 100.3°)
A. 0.4 - 2.2i
B. 5 - 0.9i
C. -0.9 + 5i
D. -0.4 + 2.2i
Answer: C
Mathematics
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Solve the inequality, then graph the solution.8c + 10 ? 7c + 21
A. c > 8 
B. c ? 11
C. c ? 11 
D. c < 8 
Mathematics
Find the cumulative distribution function for the given probability density function.f(x) = 
x2; [2, 4]
A. F(x) = 
, 2 ? x ? 4
B. F(x) = 
, 2 ? x ? 4
C. F(x) = 
, 2 ? x ? 4
D. F(x) = 
, 2 ? x ? 4
Mathematics
Do the graphs of the equations form coincident lines? (It is not necessary to graph them.)
y + 100x = 400 y = 100 – 400x A) yes B) no C) insufficient information
Mathematics
Let x be a continuous random variable over [a, b] with probability density function f. Then the median of the x-values is that number m for which 
.Find the median.f(x) = 
x, [0, 4]
A. 
B. 2
C. 4
D. 2
Mathematics