Vector v has the given magnitude and direction. Find the horizontal or vertical component of v, as indicated, if ? is the direction angle of v from the horizontal. Round to the nearest tenth when necessary.? = 46.7°, ?v? = 86.5; Find the horizontal component of v.
A. 122.3
B. 3.7
C. 63
D. 59.3
Answer: D
Mathematics
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Find the derivative of y with respect to the appropriate variable.y = (?2 + 5?) tanh-1 (? + 4)
A. (2? + 5) - 
B. - 
C. (2? + 5) tanh-1 (? + 4) - 
D. (2? + 5) tanh-1 (? + 4) - 
Mathematics
Find an equation for the surface obtained by rotating the parabola y=2x² about the y-axis.
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Mathematics
Write as a percent.
A. 19% B. 190% C. 1.9% D. 0.19%
Mathematics
Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.-31 ? -4x - 3 < -15
A. (3, 7]
B. (-?, 3] ? (7, ?)
C. [3, 7)
D. ?
Mathematics