Find the center and the radius of the circle.x2 + y2 + 6x + 8y + 25 = 81
A. (3, 4), r = 81
B. (4, 3), r = 81
C. (-3, -4), r = 9
D. (-4, -3), r = 9
Answer: C
Mathematics
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- 6x) + 0.53(?x + 8.5) = 18
A. {-7.47} B. {14.93} C. {-14.93} D. ?
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A. 
B. 
C. 
D. 
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Complete the identity.csc x(sin x + cos x) = ?
A. -2 tan2 x B. sin x tan x C. sec x csc x D. 1 + cot x
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