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A ratio that has integers for both quantities and that cannot be reduced any further (using integers) is said to be in simplest form or lowest terms. Sometimes it is useful to write a ratio in the form 1:x or x:1, where x is not necessarily an integer, to enable comparisons of different ratios. For example, the ratio 4:5 can be written as 1:1 ...
t is the maximum thickness as a fraction of the chord (so t gives the last two digits in the NACA 4-digit denomination divided by 100). In this equation, at x = 1 (the trailing edge of the airfoil), the thickness is not quite zero. If a zero-thickness trailing edge is required, for example for computational work, one of the coefficients should ...
For example, 21, 4, 0, and −2048 are integers, while 9.75, 5 + 1 / 2 , 5/4 and √ 2 are not. [8] The integers form the smallest group and the smallest ring containing the natural numbers. In algebraic number theory, the integers are sometimes qualified as rational integers to distinguish them from the more general algebraic integers.
On an inflation adjusted basis, this company is a fraction of what it was almost 30 years ago. Walgreens is one of the great names in the pharmacy business, it is one of the great retailers, but ...
The simplest counterexample of this is given by the three sets {a}, {b}, and {a,b}, the distance between the first two being 1, and the difference between the third and each of the others being one-third. To satisfy the triangle inequality, the sum of any two of these three sides must be greater than or equal to the remaining side. However, the ...
The seats-to-votes ratio for a political party is the ratio between the fraction of seats and the fraction of votes for that party: a i = s i v i {\displaystyle a_{i}={\frac {s_{i}}{v_{i}}}} The Sainte-Laguë method approximates proportionality by optimizing the seats-to-votes ratio among all parties i {\displaystyle i} with the least squares ...
At about 891 kJ/mol, methane's heat of combustion is lower than that of any other hydrocarbon, but the ratio of the heat of combustion (891 kJ/mol) to the molecular mass (16.0 g/mol, of which 12.0 g/mol is carbon) shows that methane, being the simplest hydrocarbon, produces more heat per mass unit (55.7 kJ/g) than other complex hydrocarbons.
As of 2012, 2.5 million "frac jobs" had been performed worldwide on oil and gas wells, over one million of those within the U.S. [3] [4] Such treatment is generally necessary to achieve adequate flow rates in shale gas, tight gas, tight oil, and coal seam gas wells. [5] Some hydraulic fractures can form naturally in certain veins or dikes. [6]