Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 3
C. 3
D. 
Answer: D
Mathematics
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The abbreviation "b.i.d." means
A. three times a day B. as directed C. twice a day D. before meals
Mathematics
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 
B. x = 1
C. x = 
D. x = 2
Mathematics
Solve the equation.7 + 12x = 0
A. - 
B. - 
C. 
D. 
Mathematics
Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 5x + 4y = 86x - 3y = 33
A. (-3, 4) B. (3, -4) C. (-4, 3) D. (4, -3)
Mathematics