A discrete probability distribution for a random variable X is given. Use the given distribution to find the requested information.Find E(X).
A. 5.25
B. 7.92
C. 9
D. 9.6
Answer: B
Mathematics
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Solve.Two machines are turned on at 8:00 A.M. If one can produce 25 items each hour and the other can produce 37 items each hour, at what time will they produce a total of 434 items?
A. 4:30 P.M. B. 2:00 P.M. C. 3:00 P.M. D. 4:00 P.M.
Mathematics
Multiply. Change any mixed number to an improper fraction before multiplying.4 ? 6
A. 27
B. 10
C. 24
D. 27
Mathematics
Solve the problem.A long distance phone call costs $2.40 for the first minute plus $1.10 each additional minute. What is the cost of a 24 minute call?
A. $28.80 B. $27.70 C. $63.36 D. $80.50
Mathematics
Evaluate the double integral over the given region.
R: 0 ? x ? 1, 0 ? y ? 1
A. 
(e5 - e3 - e2 - 1)
B. 
(e5 - e3 - e2 + 1)
C. 
(e5 - e3 - e2 - 1)
D. 
(e5 - e3 - e2 + 1)
Mathematics