At the 2012 summer olympics, jamaican athlete usian bolt won the gold medal in the men's 100 meter track event. he ran the distance at an average speed of 34.1 feet per second. convert this speed to miles per hour.

At a continent-continent convergence,

Match the letters with the correct terms

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?