A side of the triangle below has been extended to form an exterior angle of 139º. Find the value of x.

Can (2,3 and square root 10) be sides ona right triangle?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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)