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.
Check. 1  The symbol Ë over a letter is commonly pronounced  check  by mathematicians. 2  The typographical name for the symbol is caron or haÄek. 3  The haÄek is used in Äech cohomology and occasionally in other fields. 4  In LaTeX, $\check{x}$ is coded as \check{x} in math mode. In many branches of math, the bar may be used to denote the closure (however it is defined) of a substructure of a mathematical structure. 2  The bar is also used to denote the conjugate of a complex number. 3  The typographical name of the symbol is macron.