Simplify the expression. Assume all variables represent positive real numbers.4
+ 
A. 5
B. 8
C. 16
D. 4
+ 
Answer: B
Mathematics
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Determine whether the given lines are parallel, perpendicular, or neither.12x + 4y = 1615x + 5y = 22
A. Perpendicular B. Parallel C. Neither
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Evaluate the factorial expression.
A. 10
B.
C. 90
D. 2!
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Determine the quadrant in which 
lies if sin?<0 and cos?>0.
?
A. fourth quadrant B. third quadrant C. first quadrant D. second quadrant E. second or third quadrants
Mathematics
Solve the problem.How many liters of a 10% alcohol solution must be mixed with 60 liters of a 70% solution to get a 60% solution?
A. 1.2 L B. 12 L C. 72 L D. 7.2 L
Mathematics