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==Etymology==
==Etymology==
[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French, from Medieval Latin rata, from [[Latin]] (pro) rata (parte) according to a fixed [[proportion]]
[https://nordan.daynal.org/wiki/index.php?title=English#ca._1100-1500_.09THE_MIDDLE_ENGLISH_PERIOD Middle English], from Anglo-French, from Medieval Latin rata, from [[Latin]] (pro) rata (parte) according to a fixed [[proportion]]
Date: [http://www.wikipedia.org/wiki/15th_Century 15th century]
Date: [https://www.wikipedia.org/wiki/15th_Century 15th century]
==Definitions==
==Definitions==
*1 a : reckoned [[value]] : valuation
*1 a : reckoned [[value]] : valuation
In describing the units of a rate, the word "per" is used to separate the [[units]] of the two [[measurements]] used to calculate the rate (for example a heart rate is [[expressed]] "beats per minute"). A rate defined using two [[numbers]] of the same units (such as tax rates) or counts (such as literacy rate) will result in a dimensionless [[quantity]], which can be expressed as a percentage (for example, the global literacy rate in 1998 was 80%) or [[fraction]] or as a multiple.
In describing the units of a rate, the word "per" is used to separate the [[units]] of the two [[measurements]] used to calculate the rate (for example a heart rate is [[expressed]] "beats per minute"). A rate defined using two [[numbers]] of the same units (such as tax rates) or counts (such as literacy rate) will result in a dimensionless [[quantity]], which can be expressed as a percentage (for example, the global literacy rate in 1998 was 80%) or [[fraction]] or as a multiple.
Often "rate" is a synonym of [[rhythm]] or [[frequency]], a count per second (i.e. Hertz) e.g. radio frequencies or heart rate or sample rate.[http://en.wikipedia.org/wiki/Rate_%28mathematics%29]
Often "rate" is a synonym of [[rhythm]] or [[frequency]], a count per second (i.e. Hertz) e.g. radio frequencies or heart rate or sample rate.[https://en.wikipedia.org/wiki/Rate_%28mathematics%29]
[[Category: Mathematics]]
[[Category: Mathematics]]
