Rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 
C. 36
D. 11
Answer: B
Mathematics
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Find the equation of the parabola whose vertex and focus are shown.
A. (y - 3)2 = 2(x + 1) B. (y - 3)2 = 20(x + 1) C. (x - 3)2 = 20(y + 1) D. (x - 3)2 = 2(y + 1)
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Evaluate the polynomial.2x3 + 5x2 - x + 41for x = -2
A. 47 B. 17 C. 35 D. 37
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Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.
x = 16
A. {-5.33} B. {-2.52} C. {-0.40} D. {2.52}
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Which of the following equation does not represent y as a function of x? ?
A. y2 = 1 - x B. y = x2+ 1 C. x2 + y = 1 D. y = x2 + x- 1 E. y = x2 - 1
Mathematics