Find the center (h, k) and radius r of the circle with the given equation. (x - 3)2 + y2 = 64
A. (h, k) = (3, 0); r = 8
B. (h, k) = (0, 3); r = 64
C. (h, k) = (0, 3); r = 8
D. (h, k) = (3, 0); r = 64
Answer: A
Mathematics
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and 
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Refer to a normal distribution described by the following figure. The mean is ? and the standard deviation is ?.
The standard deviation ? =
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Simplify the expression involving rational exponents.- 
1/2
A. Not a real number
B. - 
C. 
D. - 
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Simplify.
A. 
B. 
C. 
D. 
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