Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Solve the problems.If a spring stretches 8 meters when a 3-kilogram weight is attached to it, how much will it stretch when a 21-kilogram weight is attached to it?
A. 56 meters B. 58 meters C. 55 meters D. 59 meters
Mathematics
Find the square root.
A. 
B. 
C. 
D. 
Mathematics
Write the standard form of the equation of the circle. 
A. (x - 5)2 + (y - 6)2 = 4 B. (x + 5)2 + (y + 6)2 = 4 C. (x - 5)2 + (y - 6)2 = 2 D. (x + 5)2 + (y + 6)2 = 2
Mathematics
Find the exact value of the logarithmic expression.log81
A. 8
B. 1
C. 
D. 0
Mathematics