The perimeter of the triangle shown is 32 ft what is the value of x

Need this asap if anyone can i would be very grateful. if you could show workings that would really

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

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)