Find the center of the ellipse.4x2 + y2 - 56x + 192 = 0
A. (-7, 0)
B. (7, 0)
C. (-7, -2)
D. (2, 0)
Answer: B
Mathematics
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Write the expression in the form a + bi, where a and b are real numbers.
? 
A. 2
B. -2i
C. 2i
D. -2
Mathematics
Use the arc length formula and the given information to find the indicated quantity.s = 8.1 ft, ? = 
rad; find r
A. 
ft
B. 
ft
C. 48.6? ft
D. 24.3? ft
Mathematics
Solve the equation.
= x
A. 
B. {10}
C. {-4, 10}
D. ?
Mathematics
Subtract and, if possible, simplify.- 
- 
A. - 
B. 
C. - 
D. 
Mathematics