Simplify the expression.-6x - 2x

A. 8x
B. -8x
C. -8x2
D. -4x


Answer: B

Mathematics

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Solve the initial value problem. = 4x-3/4, y(1) = 3

A. y = 16x1/4 - 13
B. y = 4x1/4 - 1
C. y =- x-7/4 - 
D. y = 16x1/4 + 48

Mathematics

Find the volume of the solid generated by revolving the region about the y-axis.The region enclosed by x = y1/3, x = 0, y = 64

A. 192?
B. 1024?
C. ?
D. 256?

Mathematics

The figure below is a regular hexagon ABCDEF with center O. (P, Q, R, S, T, and U are the midpoints of the sides.) Which of the following rotations is not a symmetry of the regular hexagon?

A. a 120° counterclockwise rotation with center O B. a 180° clockwise rotation with center O C. a 90° clockwise rotation with center O D. a 60° clockwise rotation with center O E. none of these

Mathematics

Find the angle between v and w. Round your answer to one decimal place, if necessary.v = -5i + 7j,w = -6i - 4j

A. 20.7° B. 88.2° C. 110.8° D. 90.9°

Mathematics