a square poster board has sides that are 40 inches long when the triangular flaps at the sides are opened the poster board takes the shape of the trapezoid the base of each triangle is 24 inches what is the area of the trapezoid poster board?

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)

The polynomial 2x3 + 9x2 + 4x - 15 represents the volume in cubic feet of a rectangular holding tank at a fish hatchery. the depth of the tank is (x – 1) feet. the length is 13 feet.

What does the quadrilaterals on a kid with her art class it is possible to draw a parallelogram that is not a rectangle explain