Rationalize the denominator. Assume that all variables represent positive real numbers. 

A.
B.  
C.  
D.

Answer: D

Mathematics

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Determine the most appropriate metric unit to go in the blank. Choose from km, m, cm, mm, L, mL, kg, g, and mg.The bird's wingspan is 21  .

A. mm B. mg C. mL D. cm E. m

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Find the unknown value.What percent of 50 is 8?

A. 8% B. 24% C. 12% D. 16%

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Solve the problem.Find the 100th term of the following arithmetic sequence:5, 5 - , 5 - 2, . . .

A. 5 - 99
B. 5 + 99
C. 5 - 100
D. 500 - 99

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Factor the expression completely, if possible.9z3 - 24z2 + 16z

A. (3z2 - 4z)2 B. z(3z - 4)2 C. z2(3z - 4)2 D. z(3z + 4)2

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Mathematics