Which equation could be used to calculate the sum of the geometric series? 1/4+2/9+4/27+8/81+16/243?

The number of possible solutions of a polynomial can be found by looking

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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)