Simplify.
÷ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Replace the polar equation with an equivalent Cartesian equation. r = 46 sin ?
A. x2 + (y - 23)2 = 529 B. y = 46 C. (x - 23)2 + y2 = 529 D. x2 + (y - 46)2 = 529
Mathematics
Solve the system of equations.x2 + y2 = 13x + y = -5
A. (2, -3), (3, -2) B. (-2, 3), (-3, 2) C. (-2, -3), (-3, -2) D. (2, 3), (3, 2)
Mathematics
Factor by grouping.7x2 - 26x - 8
A. (7x + 2)(x - 4) B. (7x - 2)(x + 4) C. (7x - 4)(x + 2) D. (7x + 4)(x - 2)
Mathematics
Find the foci and vertices of the ellipse.64x2 + 4y2 = 256
A. foci at (- 2
, 0) and (2
, 0)
vertices at (-8, 0), (8, 0)
B. foci at (0, -8) and (0, 8)
vertices at (0, -64), (0, 64)
C. foci at (0, - 2
) and (0, 2
)
vertices at (0, -8), (0, 8)
D. foci at (0, 8) and (2, 0)
vertices at (0, 64) and (4, 0)
Mathematics