Simplify.(-9)2
A. -18
B. 18
C. -81
D. 81
Answer: D
You might also like to view...
Solve the problem.Find the equation of the line through (0, -8) and perpendicular to the line 
.
A. y = x + 8 B. y = ?x + 8 C. y = ?x - 8 D. y = x - 8
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. not applicable B. x = 0, y = 0, z = 1; (0, 0, 1) C. x = 2, y = 1, z = 0; (2, 1, 0) D. x = 0, y = 1, z = 0; (0, 1, 0)
Solve the problem.The force acting on a pendulum to bring it to its perpendicular resting point is called the restoring force. The restoring force F, in Newtons, acting on a string pendulum is given by the formula F = mg sin?where m is the mass in kilograms of the pendulum's bob, g ? 9.8 meters per second per second is the acceleration due to gravity, and ? is angle at which the pendulum is displaced from the perpendicular. What is the value of the restoring force when m = 0.7 kilogram and ? = 45°? If necessary, round the answer to the nearest tenth of a Newton.
A. 4.9 N B. 4.7 N C. 5.8 N D. 4.8 N
For the given pair of functions, find the requested function.f(x) = x2 + 4x - 2, g(x) = -9x2 + 8x - 10; (f - g)(x)
A. 10x2 - 12x + 18 B. 10x2 - 4x + 8 C. -9x2 - 12x + 8 D. -8x2 + 12x - 8