Divide and simplify. Assume that all variables represent positive real numbers.
A. 4x2
B. 12x
C. 12x2
D. 4x
Answer: D
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 9e+13 B. 0.00009 C. 90,000 D. 9000
Mathematics
Solve.- 
= -7
A. 
B. 7
C. 49
D. 
Mathematics
Solve.The radius r of a plastic tube used in manufacturing a child's toy must not differ from the standard s by more than 2 millimeters. The manufacturing engineers express this as 
If the standard s is 50, solve the inequality for the radius r. Express the answer in set-builder notation.
A. { r 
}
B. { r 
}
C. { r 
}
D. { r 
}
Mathematics
Solve the equation.4-x = 
A. 
B. {-2}
C. 
D. {2}
Mathematics