Find an equation of a parabola satisfying the given conditions.Focus (0, -2?), directrix y = 2?

A. y2 = 4?x
B. x2 = -8?y
C. y2 = -8?x
D. x2 = -2?y


Answer: B

Mathematics

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Find the indicated probability. Round your answer to 6 decimal places when necessary.If two fair dice are rolled, what is the probability of not rolling a sum of 12?

A.
B.
C.
D.

Mathematics

Provide an appropriate response.Assume a is positive, b is negative, and c is positive for the expression a + ( b ? c).Tell whether the value of the given expression is positive, negative or cannot be determined.

A. Positive B. Negative C. Cannot be determined

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Classify the angle as acute, right, obtuse, or straight.

A. Straight B. Right C. Acute D. Obtuse

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In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.a = 5 yd, b = 5 yd

A. c ? 7.1 yd B. c ? 3.2 yd C. c ? 5.1 yd D. c = 5 yd

Mathematics