The longer leg of a 30°-60°-90° triangle is 18. what is the length of the other leg?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

What is the reflection image of (5,-3) across the line y = -x?

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)