Based on the given information, which statement best explains whether the quadrilateral is a parallelogram? It cannot be determined from the information given. It is not a parallelogram because the congruent sides cannot be parallel. It is not a parallelogram because the parallel sides cannot be congruent. It is a parallelogram based on the single opposite side pair theorem.

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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)

What’s the answer ? use the picture to see the problem