Simplify the expression. Assume that all variables are positive.
? 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the mean for the given frequency distribution.
A. 27.9 B. 6.8 C. 23.3 D. 24.6
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Add the numbers.
A. 387 B. 567 C. 765 D. 666
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Find a formula for the nth term of the arithmetic sequence.
A. 
B. 
C. 
D. 
E. 
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Find the domain of 
.
A. all real numbers except x = -7 B. all real numbers except x = 49 C. all real numbers except x = 7 D. all real numbers except x = 7 and x = -7 E. all real numbers
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