Represent the following with a graph.

A.

B.

C.

D.


Answer: B

Mathematics

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Use Gaussian elimination and matrices to solve the system of linear equations. Write your final augmented matrix in triangular form and then solve for each variable using back substitution.x - y + 4z=164x + z= 5x + 5y + z=25

A. (0, 4, 5) B. (5, 4, 0) C. (0, 5, 4) D. (5, 0, 4)

Mathematics

Graph the ellipse. Label the intercepts.x2 + 4y2 = 64

A. (-4, 0), (4, 0), (0, -8), (0, 8)

B. (-8, 0), (8, 0), (0, -2), (0, 2)

C. (-8, 0), (8, 0), (0, -4), (0, 4)

D. (-2, 0), (2, 0), (0, -8), (0, 8)

Mathematics

A solar oven uses a parabolic reflector to focus the sun's rays at a point 5 inches from the vertex of the reflector (see figure). Write an equation for a cross section of the oven's reflector with its focus on the positive y axis and its vertex at the origin.                        L = 5 inches

A.
B.
C.
D.
E. ?

Mathematics

Supply the missing numbers. Round any decimal to the nearest thousandth and percent to the nearest tenth of a percent if necessary.fractiondecimalpercent

A. 0.938; 938% B. 0.938; 93.8% C. 0.818; 8.18% D. 0.818; 81.8%

Mathematics