Solve the equation.
= 2
A. {8, 12}
B. {8, -12}
C. {-4, 18}
D. {4, 18}
Answer: A
Mathematics
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Solve the problem.The sum of 81 times a number and the reciprocal of the number is positive. Find the numbers which satisfy this condition.
A. any number between - 
and 
B. any number greater than 
C. any number greater than 0
D. any number between 0 and 
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Find all real numbers in the interval [0, 2?) that satisfy the equation.cos2x + 2 cos x + 1 = 0
A. 
B. 
C. 
D. 
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Classify the following as the equation of a parabola, a circle, an ellipse, or a hyperbola.5x2 - 8 = y + 2x
A. Hyperbola B. Ellipse C. Parabola D. Circle
Mathematics
Find the determinant of the given matrix.
A. -42 B. 10 C. 42 D. -74
Mathematics