Which system has exactly one solution? (y + 4x = -2
A.
W = - 4x + 5
(6x + 3y = -1
B.
2x + y = 4
y = 4x - 5
C.
3x - y = 2
y = -x-5
D. {-4=3(x - 2)
b
B
ОООО
с
D

The triangles are similar. what is the value of x? show your work.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

The angles in a triangle are represented by 5x, 8x, and 2x+9. what is the value of ? a.10.8 b.11.4 c.9.7 d.7.2