Convert the equation to the standard form for a hyperbola by completing the square on x and y.9y2 - 4x2 + 18y + 16x - 43 = 0
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Answer: B
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Solve the equation.x + 1 = 2
A. {3} B. {-3} C. {1} D. {-1}
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What will be an ideal response?
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Solve the problem.The force acting on a pendulum to bring it to its perpendicular resting point is called the restoring force. The restoring force F, in Newtons, acting on a string pendulum is given by the formula F = mg sin?where m is the mass in kilograms of the pendulum's bob, g ? 9.8 meters per second per second is the acceleration due to gravity, and ? is angle at which the pendulum is displaced from the perpendicular. What is the value of the restoring force when m = 0.8 kilogram and ? = 30°? If necessary, round the answer to the nearest tenth of a Newton.
A. 3.8 N B. 3.9 N C. 6.8 N D. 7.7 N