Complete the identity.1 - cos(2?) + cos(4?) - cos(6?) = ?
A. 4 sin ? sin(2?) sin(3?)
B. 4 cos ? cos(2?) cos(3?)
C. 4 cos ? cos(2?) sin(3?)
D. 4 sin ? cos(2?) sin(3?)
Answer: D
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Find an equation for the line that passes through the given point and satisfies the given conditions.P = (-6, -7); parallel to v = -3i + 9j
A. y + 7 = 
(x + 3)
B. -3x + 9y = -45
C. 9x + 3y = -75
D. -3x + 9y = 90
Provide an appropriate response.Arrange the numbers 2.59, 3.58, 3.507 in order from smaller to larger.
A. 2.59, 3.58, 3.507 B. 2.59, 3.507, 3.58 C. 3.507, 3.58, 2.59 D. 3.507, 2.59, 3.58
Solve the problem.The half-life of carbon-14 is 5700 years. Find the age of a sample in which 8% of the radioactive nuclei originally present have decayed.
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Your neighbor wants to carpet the rooms in her house. The widths of the rooms in her house are 1 yard less than the lengths. Write an equation which represents the area A of carpet needed for a room with length l.
What will be an ideal response?