Identify the equation as a parabola, circle, ellipse, or hyperbola.4x2 - y = 13

A. Circle
B. Ellipse
C. Parabola
D. Hyperbola

Answer: C

Mathematics

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At what points is the given function continuous?f(x, y) = tan (x + y)

A. All (x, y)
B. All (x, y) such that x + y ?  , where n is an integer
C. All (x, y) ?  
D. All (x, y) ? (0, 0)

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Mathematics

Find the product.(9r - 10)(9r + 10)

A. 81r2 - 100 B. 81r2 - 180r - 100 C. 81 + 180r - 100r2 D. 9r2 - 100

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Mathematics

Simplify.

A.
B.  
C.  
D.  

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Mathematics

Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.2 ? 4

A. 8
B. 8
C. 8
D. 9

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Mathematics