Find the center and the radius of the circle.3x2 + 3y2 + 6x - 12y - 60 = 0
A. (-1, 2), r = 5
B. (-2, 1), r = 25
C. (1, -2), r = 25
D. (2, -1), r = 5
Answer: A
Mathematics
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State the dimensions of the matrix.
A. 3 × 3 B. 5 C. 5 × 5 D. 9
Mathematics
Express the statement as an equation involving the indicated variables.The surface area S of a sphere is 4 times ? times the square of the radius r.
A. S = 4?r2
B. S = 4? 
C. S = 4?r
D. S = ?r2
Mathematics
Find an equation for the line with the given properties.Perpendicular to the line 
; containing the point (5, 3)
A. y = - 2x + 13
B. y = - 2x - 13
C. y = 2x - 13
D. y = - 
x - 
Mathematics
Simplify the expression.
?
What will be an ideal response?
Mathematics