Solve the problem.A plane is headed due south with an airspeed of 210 miles per hour. A wind from a direction of S30°W is blowing at 20 miles per hour. Find the groundspeed and resulting direction of the plane, rounded to the nearest whole number.
A. 193 mph; S3°W
B. 193 mph; S3°E
C. 211 mph; S15°W
D. 201 mph; S5°E
Answer: B
Mathematics
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f(x) and 
f(x)
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Express the limit as a definite integral where P is a partition of the given interval.lim
?0
?xk, [10, 12]
A. 
dx
B. 
dx
C. 
dx
D. 
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Solve the system, using Cramer's rule, if possible. x - 2y + 3z = 114x + y - z = 42x - y + 3z = 10
A. ? B. {(-2, -3, 3)} C. {(2, -3, 1)} D. {(2, 3, 5)}
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Find the expected value.A new light bulb has been found to have a 0.02 probability of being defective. A shop owner receives 500 bulbs of this kind. How many of these bulbs are expected to be defective?
A. 20 B. 100 C. 10 D. 500
Mathematics