Simplify. Assume that all variables represent positive real numbers.
- 
A. -1
B. 0
C. -6
D. - 
Answer: B
Mathematics
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at
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Solve the equation.x + 4 = 9
A. 13 B. -13 C. -5 D. 5
Mathematics
Solve the system.
A. (1, 3, 4) B. (1, 4, 3) C. (4, 3, 1) D. (4, 1, 3)
Mathematics
Evaluate the expression for the given replacement values.x + y, for x = 15 and y = 23
A. 83 B. 38 C. 65 D. 47
Mathematics