Find an equation for the conic. If the conic is a parabola, assume that the vertex is at the origin. If the conic is an ellipse or hyperbola, assume that it is centered at the origin.Focus at (0, -8) and e = 1

A. y = - x2
B. x = - y2
C. y = - x2
D. y = x2


Answer: C

Mathematics

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Match the graph to one of the listed functions.    

A. f(x) = x2 - 10x B. f(x) = -x2 - 10x C. f(x) = x2 - 10 D. f(x) = -x2 - 10

Mathematics

Find the equation of a circle satisfying the given conditions.Center: (-5, 0); radius: 

A. (x - 5)2 + y2 = 2 B. (x + 5)2 + y2 = 2 C. x2 + (y - 5)2 = 4 D. x2 + (y + 5)2 = 4

Mathematics

Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.A computer can do one calculation in 1.4 × 10-7 seconds. How long would it take the computer to do a trillion (1012) calculations?

A. 1.4 × 106 sec B. 1.4 × 10-7 sec C. 1.4 × 1012 sec D. 1.4 × 105 sec

Mathematics

Write the augmented matrix for the system of equations.5x + 4y - 7z + w = 98y + z = 3x - y - 6z = -912x - 12y + 9z = 10

A.

B.

C.

D.

Mathematics