Given: cf = df prove: 1 = 2 based on the given information, which of the following lines would be in this proof? triangle fce congruent to triangle fde by hl. triangle fce congruent to triangle fde by la. triangle acf congruent to triangle bdf by hl.

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)