Simplify the following expression.
?

?

A. 1
B. x6y?4
C.
D. 4
E.


Answer: A

Mathematics

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A.  
B.  
C.  
D.  

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Solve.d2 - 121 = 0

A.
B. ±11
C. 11
D. no real-number solutions

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Solve the problem.In a certain country, the infant mortality rate is 6.7 per 1000 live births. Assuming that this is the expected value for a Poisson distribution, find the probability that in a random sample of 1000 live births, there were fewer than 5 cases of infant mortality.

A. 0.242591 B. 0.173279 C. 0.161727 D. 0.202159

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What does the circuit symbol in the figure mean? ? ?

A. Battery B. Switch C. AND-gate D. Light E. OR-gate

Mathematics