Simplify the expression. Write the answer with positive exponents only. Assume that all variables represent positive real numbers.
8
A. 
B. x3/70
C. x1/4
D. x3
Answer: A
Mathematics
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? 4x
A. (-?, 4] or [6, ?) B. [6, ?) C. [0, 4] or [6, ?) D. (-?, 0] or [4, 6)
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A. - 
B. 6
C. 
D. 
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Use the reference angle to find the exact value of the expression. Do not use a calculator.sin 405°
A. 
B. - 
C. - 
D. 
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