Find decimal notation.- 
A. -1.275
B. -1.25
C. -1.35
D. -1.375
Answer: D
Mathematics
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Graph the parabola or ellipse. Include the directrix that corresponds to the focus at the origin.r = 
A. 
B. 
C. 
D. 
Mathematics
Evaluate or simplify the given expression.sin(2 sin-1 x)
A. x
B. 2x
C. 2x - 2x3
D. 2x
Mathematics
Use transformations to graph the function.y = -2 cos x
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A sail on a sailboat is supported by a mast and a boom. The length and direction of the mast and boom can be described by the vectors m = i - 4j + 5k and b = -2i + 3j + k, respectively, where the components are in meters. Find the angle (to the nearest tenth of a degree) between the mast and boom.
Fill in the blank(s) with the appropriate word(s).
Mathematics