Use the following diagram and information to complete the proof. Given: ABCD is a rectangle.
Prove: The diagonals AC¯¯¯¯¯¯¯¯ and BD¯¯¯¯¯¯¯¯ are congruent.
Quadrilateral A B C D with right angles at each vertex. The diagonals B D and A C are also drawn in.

Match each numbered statement to the correct reason to complete the proof.

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)

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.