Solve the problem.The annual rainfall in Maine is a random variable with probability density function defined by 
for x in 
Find the probability that the rainfall is less than the expected value of the rainfall.
A. 0.500
B. 0.447
C. 0.445
D. 0.489
Answer: B
Mathematics
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Evaluate.(-3)3
A. -27 B. 27 C. -81 D. 9
Mathematics
Write the decimal in words.54.2
A. fifty-four and two hundredths B. fifty-four and two tenths C. fifty-four and two thousandths D. fifty-four and two millionths
Mathematics
Fill in the blank with one of the words or phrases listed below. Not all choices will be used.
If 
= 
, then ad and bc are called 
.
A. least common denominator B. complex fraction C. reciprocals D. cross products
Mathematics
Solve the problem. Express any improper fraction as a whole or mixed number.Frank can type a report in 5 hours. James takes 4 hours to type it. How long will it take the two of them typing together?
A. 
hr
B. 20 hr
C. 
hr
D. 2
hr
Mathematics