Given C = 127°, B = 23°, and c = 15, use the Law of Sines to solve the triangle for the value of a. Round answer to two decimal places.
A. a = 30.66
B. a = 10.62
C. a = 19.19
D. a = 8.17
E. a = 9.39
Answer: E
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Simplify the algebraic expression by combining like terms. [-3x2 - (-6x2 + 5)] + [-(5x2 + (-9 - 5x2)) + 10x2]
A. -9x2 - 4 B. 13x2 - 14 C. -7x2 - 14 D. 13x2 + 4
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in quadrant II. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant III.f(2?)
A. 
B. - 
C. 
D. - 
Write the quotient in the standard form.
A. 
- 
i
B. 
- 
i
C. 
- 
i
D. 
- 
i
Solve the problem.A farmer's silo is the shape of a cylinder with a hemisphere as the roof. If the height of the silo is 94 feet and the radius of the hemisphere is r feet, express the volume of the silo as a function of r.
A. V(r) = ?(94 - r)r3 + 
?r2
B. V(r) = ?(94 - r)r2 + 
?r3
C. V(r) = ?(94 - r) + 
?r2
D. V(r) = 94?r2 + 
?r3