Determine the size of matrix A and tell whether it is a square matrix, row matrix, column matrix, or none of these.A = 

A. 5 × 4; none of these
B. 4 × 4; square matrix
C. 20; row matrix
D. 4 × 5; none of these


Answer: D

Mathematics

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Plot the point A. Plot the point B that has the given symmetry with point A.A = (2, 4); B is symmetric to A with respect to the x-axis

A.

B.

C.

D.

Mathematics

Find the fluid force exerted against the vertically submerged flat surface depicted in the diagram. Assume arbitrary units, and call the weight-density of the fluid w.

A. 432w B. 864w C. 648w D. 324w

Mathematics

Solve the system.

Mathematics

Complete the ordered pairs. Then graph the equation by plotting the points and drawing a line through them.(0, ), (4, ), (-4, )

A. (0, 1), (4, 4), (-4, -2)

B. (0, -1), (4, -4), (-4, 2)

C. (0, 0), (4, -3), (-4, 3)

D. (0, 1), (4, -2), (-4, 4)

Mathematics