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  2. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    An increase of $0.15 on a price of $2.50 is an increase by a fraction of ⁠ 0.15 / 2.50 ⁠ = 0.06. Expressed as a percentage, this is a 6% increase. While many percentage values are between 0 and 100, there is no mathematical restriction and percentages may take on other values. [4]

  3. Head (vessel) - Wikipedia

    en.wikipedia.org/wiki/Head_(Vessel)

    The dish has a radius that equals the diameter of the cylinder it is attached to (=). The knuckle has a radius that equals a tenth of the diameter of the cylinder ( r 2 = 0.1 × D o {\displaystyle r_{2}=0.1\times Do} ), hence its alternative designation "decimal head".

  4. Division (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Division_(mathematics)

    Division is also not, in general, associative, meaning that when dividing multiple times, the order of division can change the result. [7] For example, (24 / 6) / 2 = 2, but 24 / (6 / 2) = 8 (where the use of parentheses indicates that the operations inside parentheses are performed before the operations outside parentheses).

  5. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    3 mrad, which equals 3 m at 1000 m (or 0.3 m at 100 m) 6 mrad, which equals 6 m at 1000 m (or 0.6 m at 100 m) 9 mrad, which equals 9 m at 1000 m (or 0.9 m at 100 m) With a tilted mount the maximum usable scope elevation can be found by:

  6. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    σ x should usually be quoted to only one or two significant figures, as more precision is unlikely to be reliable or meaningful: 1.79 ± 0.06 (correct), 1.79 ± 0.96 (correct), 1.79 ± 1.96 (incorrect). The digit positions of the last significant figures in x best and σ x are the same, otherwise the consistency is lost. For example, "1.79 ± ...

  7. Abundance of the chemical elements - Wikipedia

    en.wikipedia.org/wiki/Abundance_of_the_chemical...

    The abundance of the chemical elements is a measure of the occurrences of the chemical elements relative to all other elements in a given environment. Abundance is measured in one of three ways: by mass fraction (in commercial contexts often called weight fraction), by mole fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume fraction.

  8. Mortgage calculator - Wikipedia

    en.wikipedia.org/wiki/Mortgage_calculator

    For example, if the yearly percentage rate was 6% (i.e. 0.06), then r would be / or 0.5% (i.e. 0.005). N - the number of monthly payments, called the loan's term, and; P - the amount borrowed, known as the loan's principal. In the standardized calculations used in the United States, c is given by the formula: [4]

  9. Duodecimal - Wikipedia

    en.wikipedia.org/wiki/Duodecimal

    The duodecimal system, also known as base twelve or dozenal, is a positional numeral system using twelve as its base.In duodecimal, the number twelve is denoted "10", meaning 1 twelve and 0 units; in the decimal system, this number is instead written as "12" meaning 1 ten and 2 units, and the string "10" means ten.