The polar equation represents a conic with a focus at the pole. Identify the conic.r = 
A. parabola
B. hyperbola
C. not a conic
D. ellipse
Answer: D
Mathematics
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Find the exact value of the expression.sin 15°
A. - 
B. - 
C. 
D. 
Mathematics
Solve the equation by completing the square.x2 - 4x - 7 = 0
A. {-2 - 
, -2 + 
}
B. {2 - 
, 2 + 
}
C. {4 - 
, 4 + 
}
D. {2 - 
, 2 + 
}
Mathematics
Write the given set in interval notation and graph the set on a number line.{x|x < -3}
A. [-3, ?)
B. (-3, ?)
C. (-?, -3]
D. (-?, -3)
Mathematics
Suppose that 30% of all small businesses are undercapitalized, 40% of all undercapitalized small business fail, and 20% of all small businesses that are not undercapitalized fail. A small business is chosen at random. Find the probability that the small business is not undercapitalized and yet fails.
A. 0.12 B. 0.20 C. 0.40 D. 0.14 E. none of these
Mathematics