Evaluate. Assume u > 0 when ln u appears.  dx

A. (x9 - 4)5 + C
B.  + C
C.  + C
D.  + C

Answer: C

Mathematics

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Solve the given system of equations algebraically.4x2 - 3y2 = -112x2 + 5y2 = 53

A. x = 2, y = 3; x = -2, y = 3; x = 2, y = -3; x = -2, y = -3 B. x = 2, y = 3; x = 3, y = 2; x = -2, y = -3; x = -3, y = -2 C. x = -2, y = -3; x = -3, y = -2 D. x = 2, y = -3; x = 2, y = 3

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Mathematics

Evaluate the factorial expression., where n = 38 and r = 5

A. 501,942 B. 1,771,560 C. 1406 D. 50,616

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Mathematics

Solve the problem.At age 50, Ann must choose between taking $20,000 at age 60 if she is alive then, or $30,000 at age 70 if she is alive then. The probability for a person aged 50 living to be 60 and 70 is .83 and , respectively. Using expected value, what is Ann's best option?

A. $20,000 at age 60 B. $30,000 at age 70

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Mathematics

Convert the equation given in polar form into rectangular form.? = 

A. x2 + y2 = 1
B. y = - x
C. y = - x2
D. y = x

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Mathematics