Sheila has 5 times as many markers as dave. together, they have 18markers. how many markers does sheila have?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol

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)

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6