Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 1
D. 
Answer: B
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Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 3, u '(1) = -5, v(1) = 6, v '(1) = -4.
(uv) at x = 1
A. -42 B. 18 C. -39 D. 42
Name the place held by the specified digit in the given number.4 in the number 189,247
A. thousands B. ones C. hundreds D. tens
Use the Remainder Theorem to find the remainder.f(x) = 2x3- 5x2 - 3x + 6 is divided by x + 3
A. -84 B. -102 C. -24 D. 0
Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution.x - y + 4z=164x + z= 5x + 5y + z=25
A. (0, 4, 5) B. (5, 4, 0) C. (0, 5, 4) D. (5, 0, 4)