The lengths of the legs of a right triangle are given. Find the hypotenuse.a = 9, b = 12
A. 20
B. 14
C. 19
D. 40
Answer: A
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Give an appropriate answer.A bee was flying downward along the curve that is the intersection of 
with the plane y = 1. At the point 
the bee went off on the tangent line. Where did the bee hit the yz-plane?
A. (1, 0, -19) B. (0, 1, 25) C. (0, 1, -8) D. (0, 1, -19)
Solve the triangle. Round the answer to the nearest tenth. 
A. A ? 57.8°, B ? 64.4°, C ? 57.8° B. A ? 35.6°, B ? 108.9°, C ? 35.6° C. A ? 33.6°, B ? 112.8°, C ? 33.6° D. A ? 41.3°, B ? 97.4°, C ? 41.3°
Solve the equation.ln (45 + 6x) = 2 ln (x + 3)
A. x = - 
B. x = -6
C. x = 6
D. x = 6, x = -6
Solve.An electronics manufacturer's revenue R for selling x mobile phones is given by 
A competing electronics manufacturer's revenue for selling a similar mobile phone is 
Under what circumstances will both manufacturers make the same revenue?
A. They will make the same revenue if they sell 460 phones. B. They will make the same revenue if they sell 0 or 460 phones. C. They will make the same revenue if they sell 0 or 230 phones. D. They will never make the same revenue.