Find the indicated derivative.Find fy for f(x, y, z) = .

A. - 
B. - 
C. - 
D. - 


Answer: D

Mathematics

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Solve the variation problem.The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of  per hour?

A. 308.05 feet B. 295.75 feet C. 296.09 feet D. 253.5 feet

Mathematics

Write the expression with positive exponents only. Then simplify, if possible.(-4)-2

A. - 
B. -16
C. 16
D.

Mathematics

Give the equation of the horizontal asymptote of the rational function.g(x) = 

A. None B. y = 0 C. y = -5 D. y = 9

Mathematics

Find the first term a1 and the common difference d of the arithmetic sequence.5.75, 7.78, 9.81, 11.84, . . .

A. a1 = 2.03, d = 6.09 B. a1 = 5.75, d = 1.52 C. a1 = 5.75, d = 2.03 D. a1 = 2.03, d = 5.75

Mathematics