And as the Centers for Disease Control and Prevention sounds the alarm about a worsening heroin epidemic here in the U.S., opium production in Afghanistan shows no signs of slowing down. Afghanistan has roughly 500,000 acres, or about 780 square miles, devoted to growing opium poppy. That's equivalent to more than 400,000 U.S. football fields â including the end zones, John Sopko, Special Inspector General for Afghanistan Reconstruction, said in a speech in May.
Quick Answer. The mathematical symbol for average is an italicized x with a horizontal line over it. The most common type of average is the mean, though other types exist. Continue Reading.
This list is incomplete; you can help by expanding it. This is a list of symbols found within all branches of mathematics to express a formula or to represent a constant. When reading the list, it is important to recognize that a mathematical concept is independent of the symbol chosen to represent it. Symbols that point left or right: 2  Brackets: Symbols that are placed on either side of a variable or expression, such as | x 3  |. Other non-letter symbols: Symbols that do not fall in any of the other categories.