Find the center and the radius of the circle.x2 + 2x + 1 + (y - 6)2 = 81
A. (6, -1), r = 9
B. (-6, 1), r = 81
C. (1, -6), r = 81
D. (-1, 6), r = 9
Answer: D
Mathematics
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Evaluate the improper integral.
A. 
B. 
C. 
D. 
Mathematics
Supply the missing numbers. Round any decimal to the nearest thousandth and percent to the nearest tenth of a percent if necessary.fractiondecimalpercent?0.25
A. 
; 25%
B. 
; 2.5%
C. 
; 2.5%
D. 
; 25%
Mathematics
Find the center and the radius of the circle.x2 + y2 - 6x = -12y - 36
A. (3, -6); r = 3 B. (4, -7); r = 3 C. (3, -6); r = 4 D. (6, -6); r =3
Mathematics
Solve the equation. First simplify the expression by combining like terms.
(r + 6) = 
(r + 8)
A. -2 B. -1 C. 2 D. 1
Mathematics