Solve the given equation by completing the square.2x2 + 6x = - 3
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Find dy/dx without eliminating the parameter.x = 4 cos t, y = 6 cos(2t)
A. 6 sin t
B. 6 sin t cos t
C. 
D. 6 cos t
Mathematics
Solve the problem.The accompanying figure shows the graph of y = -x2 shifted to a new position. Write the equation for the new graph.
A. y = -x2 + 4 B. y = -(x + 4)2 C. y = -x2 - 4 D. y = -(x - 4)2
Mathematics
Determine the specific solutions (if any) to the equation on the interval [0, 2?).cos 2? = 
A. 0, 
, ?, 
B. 
, 
, 
, 
C. no solution
D. 
, 
, 
, 
Mathematics
What length of binding is needed to bind a circular rug that is 43 inches in diameter? Round to the nearest tenth of an inch.
a. 270.2 inches b. 135.1 inches c. 5808.8 inches d. 1452.2 inches e. 67.5 inches
Mathematics