Solve the quadratic equation by completing the square. Make sure your answer is simplified completely. If there are no real solutions, so state.y2 - 4y - 15 = 0
A. y = 2 - 
or y = 2 + 
B. y = 2 - 
or y = 2 + 
C. y = 4 - 
or y = 4 + 
D. y = -2 - 
or y = -2 + 
Answer: A
Mathematics
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A. 40
B. 
C. 
D. 
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A. 0.006 B. 0.5 C. 0.05 D. 0.005
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Solve the problem.The displacement d, in inches, from equilibrium of a weight suspended from a spring is given by d = 1 + 2 sin(15t)°where t in time in seconds. Find the displacement when t = 0, 2, 4, 6, 8, 10, and 12 seconds. Do not use a calculator.
What will be an ideal response?
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Write the solution set in interval notation.w is not larger than 2
A. (2, ?) B. (-?, 2] C. (-?, 2) D. [2, ?)
Mathematics