Simple easy math please i need someone for tutoring for 10 questions
(-1) + 4x + 2 + 2x + x

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c