Solve the problem.The annual rainfall in Maine is a random variable with probability density function defined by 
for x in 
Find the mean annual rainfall.
A. 2.994
B. 3.000
C. 3.194
D. 3.360
Answer: C
Mathematics
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Evaluate.(-1)20
A. -1 B. 20 C. -20 D. 1
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Add. 8 + (-7)
A. -1 B. 15 C. 1 D. -15
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Find the measure of each marked angle.
A. 60° and 120° B. 45° and 55° C. 90° and 270° D. 45° and 135°
Mathematics
Find all complex solutions for the equation.
+ 
+ 4 = 0
A. 
B. 
C. 
D. 
Mathematics