Rationalize the denominator.
A. 
- 
B. 
- 
C. 
D. 
+ 
Answer: A
Mathematics
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Evaluate the limit.
= (2e-t i + 8e-t j)
A. 
i - 4j
B. - 4j
C. i + 4j
D. 4j
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Express the given quantity in terms of sin x or cos x.cos (6? + x)
A. -cos x B. cos x - sin x C. cos x D. -sin x
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Simplify. (Assume all variables are nonzero.)
2
A. 
B. 
C. 2
D. 
Mathematics
Answer the question as instructed.Which of the following statements is true?
A. 10 > 5 B. 5 > 5 C. 10 < 5 D. 5 ? 5
Mathematics