Find the center of the ellipse. 9(x + 1)2 + 16(y + 3)2 = 144
A. (1, 3)
B. (-3, -1)
C. (-1, -3)
D. (9, 16)
Answer: C
Mathematics
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Find the cosine of ?.
?
?
?
A. ?
B. ?
C. 
D. 
?
E. 
?
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