Solve the problem.A plane flying a straight course observes a mountain at a bearing of 32.5° to the right of its course. At that time the plane is 
from the mountain. A short time later, the bearing to the mountain becomes 42.5°. How far is the plane from the mountain when the second bearing is taken (to the nearest tenth of a km)?
A. 7.5 kilometers
B. 4.8 kilometers
C. 8.4 kilometers
D. 3.2 kilometers
Answer: B
Mathematics
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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (x + 5) sin x
A. sin x ln (x + 5)
B. 
(x + 5) sin x
C. (x + 5) sin x
D. cos x ln (x + 5) + 
Mathematics
Provide an appropriate response.Find the magnitude of the vector in standard position with end point (-4, 9).
A. 8.1 B. 5.1 C. 3.2 D. 9.8
Mathematics
Determine whether the statement below is true for positive real numbers c.
?
?
A. False B. True
Mathematics
Solve.A doctor wants a patient to receive 4.8 L of a normal saline solution in a 
period. How many milliliters per hour must be administered?
A. 4800 mL B. 200 mL C. 115.2 mL D. 0.2 mL
Mathematics