Graph.9(x + 2)2 - 4(y + 4)2 = 36
A. 
B. 
C. 
D. 
Answer: D
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Find all angles in [0°, 360°) that satisfy the equation.sec ? = - 
A. {45°, 315°} B. {45°, 225°} C. {135°, 225°} D. {225°, 315°}
Solve using the addition principle.y + 17 = -16
A. -1
B. -33
C. 1
D. 
Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution. 6x - y - 6z=-21 -4x + 7z= 30 2y + z= 12
A. (-3, 6, 3) B. (3, 6, 3) C. (-3, 3, 6) D. (3, 3, 6)
Solving the following equation will require you to use the quadratic formula. Solve the equation for ? between 0° and 360°, and round your answers to the nearest tenth of a degree.
?
?
A. 65.1°, 294.9° B. 65.7°, 294.3° C. 66.5°, 293.5° D. 65.3°, 294.7° E. 65.5°, 294.5°