Question for you people. what is 13 + c = -9(btw it's a negative 9)

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

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