The figure is a parallelogram. One diagonal measures 28 units. Is the figure a rectangle? Explain. A. No, it is not a rectangle because the diagonals are congruent.

B. No, it is not a rectangle because the sides of the parallelogram do not meet at right angles.

C. Yes, it is a rectangle because the diagonals are congruent.

D. Yes, it is a rectangle because the sides of the parallelogram do meet at right angles.

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

Need on this geometry question. explain how you did it.

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)