Simplify.2
+ 5
A. 16
B. 23
C. 407
D. 53
Answer: D
Mathematics
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Rationalize the denominator and simplify. Assume all variables represent nonnegative real numbers. 
A. 
B. 
C. 
D. 
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Write the expression in i notation.
A. 3
B. -3
C. -3i
D. 3i
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Write the decimal as a percent.0.7
A. 700% B. 70% C. 0.07% D. 0.7%
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Solve the problem.A plane makes a 240-mile trip against a head wind in 1 hour and 30 minutes and returns, with a tail wind of the same speed, in 1 hour. What is the speed of the wind?
A. 40 mph B. 160 mph C. 200 mph D. 80 mph
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