Find the derivative of y with respect to x, t, or ?, as appropriate.y = x5ln x - 
x3
A. 5x4 - x2
B. x4 - x2 + 5x4ln x
C. 6x4 - x2
D. x5ln x - x2 + 5x4
Answer: B
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Evaluate.A2 ? B - C, where A = 0.2, B = -7, and C = 0.51
A. -0.6727 B. -1.91 C. -0.79 D. -0.3004
Find the reciprocal, if it exists.- 
A. 1
B. 
C. - 
D. 
Solve the problem.While traveling at a constant speed in a car, the centripetal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 20 feet per second per second when the radius of the turn is 100 feet, find the acceleration the passengers feel when the radius of the turn is 400 feet.
A. 8 ft/sec2 B. 6 ft/sec2 C. 7 ft/sec2 D. 5 ft/sec2
Insert a decimal point in the product.39.81 × 4.6 = 183126
A. 183,126. B. 18.3126 C. 1831.26 D. 183.126