Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Determine the symmetries of the curve.r = 5 sin ? - 2 cos ?
A. No symmetry B. y-axis only C. x-axis only D. x-axis, y-axis, origin
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Find the equation of the circle from the given information.Center at (0, 7), radius 2
A. (x + 7)2 + y2 = 4 B. x2 + (y + 7)2 = 2 C. x2 + (y - 7)2 = 4 D. (x - 7)2 + y2 = 4
Mathematics
Solve the equation. Express radicals in simplest form.x2 + 4 = 148
A. {-11, 11} B. {-12, 12} C. {12} D. {74}
Mathematics
Evaluate the function f at the indicated value.
{5x, if x ? -1x - 6, if x > -1
A. -11 B. -1 C. 25 D. -25
Mathematics