Find the derivative.y = 2x2e-x
A. 4xe-x(1 - x)
B. 2xex(2 - x)
C. 2xe-x(x + 2)
D. 2xe-x(2 - x)
Answer: D
Mathematics
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A. 3xy2
B. 3x2
C. 3x
D. 3xy
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Solve the problem.A cashier has a total of 131 bills, made up of fives and tens. The total value of the money is $935. How many ten-dollar bills does the cashier have?
A. 75 B. 28 C. 84 D. 56
Mathematics
Use geometry to evaluate the definite integral.
A. 48 B. 33 C. 30 D. 22
Mathematics
Solve the system of equations by graphing. If the system is inconsistent or the equations are dependent, say so.x = -yy + x = 6
A. ? (inconsistent system) B. {(x, y)|x = -y} (dependent equations) C. {(1, 5)} D. {(1, 1)}
Mathematics