Solve the system of equations by determinants. 2x - 2y = 2 2x + 3y = 37
A. x = -8, y = -7
B. x = 8, y = 7
C. x = -7, y = 8
D. x = 7, y = 8
Answer: B
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Arrange the fractions in ascending order. Or, if the fractions are equivalent, answer "Equivalent".
, 
, 
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
Use Identities to find the exact value.cos 
A. 
B. 
C. 
- 
D. -
- 
Use the two-stage method to solve.Find x1 ? 0 and x2 ? 0 such that 3x1 + 3x2 ? 60 2x1 + 5x2 ? 120and z = 5x1 + 4x2 is maximized.
A. x1 = 60, x2 = 0, z = 300 B. x1 = 40, x2 = 8, z = 232 C. x1 = 30, x2 = 20, z = 230 D. x1 = 0, x2 = 24, z = 96
Find the center, vertices, and foci of the ellipse with the given equation.
+ 
= 1
A. Center: (-3, -4); Vertices: (-4, -8), (-4, 2); Foci: (-4, -7), (-4, 1) B. Center: (-3, -4); Vertices: (-8, -4), (2, -4); Foci: (-7, -4), (1, -4) C. Center: (-3, -4); Vertices: (-8, -4), (2, -4); Foci: (-6, -4), (0, -4) D. Center: (-3, -4); Vertices: (-4, -8), (-4, 2); Foci: (-4, -6), (-4, 0)