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  2. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    The Babylonians also possessed a place-value system and used a sexagesimal numeral system which is still in use today for measuring angles and time. [76] In the 6th century BC, Greek mathematics began to emerge as a distinct discipline and some Ancient Greeks such as the Pythagoreans appeared to have considered it a subject in its own right. [77]

  3. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    In the polar coordinate system, one number (radius or r) is used to represent z 's distance from the origin of the complex plane, and the other (angle or φ) the counter-clockwise rotation from the positive real line: [41] = (⁡ + ⁡), where i is the imaginary unit satisfying =.

  4. Labor force in the United States - Wikipedia

    en.wikipedia.org/wiki/Labor_force_in_the_United...

    Economy by city or county. Labor. United States portal. v. t. e. The labor force is the actual number of people available for work and is the sum of the employed and the unemployed. The U.S. labor force reached a record high of 168.7 million civilians in September 2024. [1] In February 2020, at the start of the COVID-19 pandemic in the United ...

  5. Virginia - Wikipedia

    en.wikipedia.org/wiki/Virginia

    The works of Pulitzer Prize winner Ellen Glasgow often dealt with social inequalities and the role of women in her culture. [301] Glasgow's peer and close friend James Branch Cabell wrote extensively about the changing position of gentry in the Reconstruction era , and challenged its moral code with Jurgen, A Comedy of Justice . [ 302 ]

  6. 0.999... - Wikipedia

    en.wikipedia.org/wiki/0.999...

    The Archimedean property: any point x before the finish line lies between two of the points P n (inclusive).. It is possible to prove the equation 0.999... = 1 using just the mathematical tools of comparison and addition of (finite) decimal numbers, without any reference to more advanced topics such as series and limits.

  7. List of countries by percentage of population living in poverty

    en.wikipedia.org/wiki/List_of_countries_by...

    Global map of countries by poverty headcount ratio at $6.85 a day (2017 PPP) (% of population), 2021 [3] This is a list of countries and territories by percentage of population living in poverty, as recorded by the World Bank and International Labour Organization. Poverty is about not having enough money to meet basic needs including food ...

  8. Demographics of sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_sexual...

    The demographics of sexual orientation and gender identity in the United States have been studied in the social sciences in recent decades. A 2017 Gallup poll concluded that 4.5% of adult Americans identified as LGBT with 5.1% of women identifying as LGBT, compared with 3.9% of men. [108]

  9. Healthcare in the United States - Wikipedia

    en.wikipedia.org/wiki/Healthcare_in_the_United...

    This reasoning has led for calls to reform the insurance system to create a consumer-driven healthcare system whereby consumers pay more out-of-pocket. [238] In 2003, the Medicare Prescription Drug, Improvement, and Modernization Act was passed, which encourages consumers to have a high-deductible health plan and a health savings account .