Divide. Write with positive exponents.
A. 5x6 - 10x4 + x2
B. 5x7 - 10x4 + x
C. 5x6 - 10x3 + x
D. -5
Answer: C
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Solve the system. If there is an unlimited number of solutions, find one of them.x + y + z = 92x - 3y + 4z = 7x - 4y + 3z = -2
A. x = 9, y = 7, z = 2
B. x = 1, y = 1, z = 1
C. Unlimited: x = , y =
, z = 0
D. Inconsistent
Find an equation of the line described. Write the equation in slope-intercept form if possible.Through (-9, -75) and (1, 5)
A. y = -8x - 147
B. y = 8x - 3
C. y = x -
D. y = - x -
Solve the problem.A wheel with a 36-inch radius is marked at two points on the rim. The distance between the marks along the wheel is found to be 12 inches. What is the angle (to the nearest tenth of a degree) between the radii to the two marks?
A. 17.1° B. 21.1° C. 15.1° D. 19.1°
Use the square root property to solve the equation.(2x - 3)2 = 81
A. {6, -12} B. {12, -6} C. {3, -6} D. {6, -3}