Find the center and radius of the sphere.3x2 + 3y2 + 3z2 - 2x + 2y = 9
A. C
, a = 
B. C
, a = 
C. C
, a = 
D. C
, a = 
Answer: A
Mathematics
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Find the polar coordinates of the point(s) of intersection of the given curves for 
r = 1 + sin ?, r = 1 - sin ?
A. (0, 0), (0, ?)
B. 
, 
C. 
, 
D. (1, 0), (1, ?)
Mathematics
Solve the following system of equations. Round your answers to two decimal places.
What will be an ideal response?
Mathematics
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.9
A. 95 B. 0.95 C. 0.105 D. 9.5
Mathematics
Simplify. Assume that all variables represent positive real numbers.7
- 5
A. 18
B. 2
C. -18
D. 7
- 5
Mathematics