The diagonal of a tv is 28 inches long. assuming that this diagonal forms a pair of 30-60-90 right triangles, what are the exact length and width of the tv? a. 14/2 inches by 14/2 inches b. 56 inches by 56/3 inches c. 14 inches by 14/3 inches d. 56/2 inches by 56/2 inches

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)