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In mathematics, the QM-AM-GM-HM inequalities, also known as the mean inequality chain, state the relationship between the harmonic mean, geometric mean, arithmetic mean, and quadratic mean (also known as root mean square). Suppose that ,, …, are positive real numbers. Then
Proof without words of the AM–GM inequality: PR is the diameter of a circle centered on O; its radius AO is the arithmetic mean of a and b. Using the geometric mean theorem, triangle PGR's altitude GQ is the geometric mean. For any ratio a:b, AO ≥ GQ. Visual proof that (x + y) 2 ≥ 4xy. Taking square roots and dividing by two gives the AM ...
AM General also acquired Department of Defense contracts for medium and heavy trucks, including the M151 series, [30] 2 1/2 ton M35 series, and 5 ton M809 series in the 1970s, then the M939 series in the 1980s. In 2005, AM General was contracted to take over militarization, sales, and marketing of LSSV vehicles. [31] [6]
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General Motors has a pickup problem. For the first time since 2007, the company is revamping its full-size-truck architecture. GM executives hope that an improved pickup lineup will eventually ...
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In business, Gross Margin Return on Inventory Investment (GMROII, also GMROI) [1] is a ratio which expresses a seller's return on each unit of currency spent on inventory.It is one way to determine how profitable the seller's inventory is, and describes the relationship between the profit earned from total sales, and the amount invested in the inventory sold.
Daniel Acker/Bloomberg via Getty Images By Bernie Woodall DETROIT -- The U.S. auto industry is on track for a record year of annual sales, General Motors said Tuesday, as the top U.S. automaker ...