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  2. Pythagorean triple - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_triple

    When a triple of numbers a, b and c forms a primitive Pythagorean triple, then (c minus the even leg) and one-half of (c minus the odd leg) are both perfect squares; however this is not a sufficient condition, as the numbers {1, 8, 9} pass the perfect squares test but are not a Pythagorean triple since 1 2 + 8 2 ≠ 9 2. At most one of a, b, c ...

  3. Grading systems by country - Wikipedia

    en.wikipedia.org/wiki/Grading_systems_by_country

    8 80–89.99 A+: 7 60–79.99 A: 6 55–59.99 B: 5 ... the year is divided into three trimesters and classes are usually yearlong. ... Plus and minus signs are often ...

  4. List of countries by government budget - Wikipedia

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

    Net lending (+)/borrowing (-) is calculated as revenue minus total expenditure. This is a core GFS balance that measures the extent to which general government is either putting financial resources at the disposal of other sectors in the economy and nonresidents (net lending), or utilizing the financial resources generated by other sectors and ...

  5. State income tax - Wikipedia

    en.wikipedia.org/wiki/State_income_tax

    These include analogs to the federal Alternative Minimum Tax in 14 states, [4] as well as measures for corporations not based on income, such as capital stock taxes imposed by many states. Income tax is self assessed, and individual and corporate taxpayers in all states imposing an income tax must file tax returns in each year their income ...

  6. Social Security (United States) - Wikipedia

    en.wikipedia.org/wiki/Social_Security_(United...

    However, these groups also have the smallest percentage of American household incomes – the first quintile earns 3.2% of all income, while the second quintile earns 8.4% of all income. [172] Higher-income retirees pay income taxes on 85% of their Social Security benefits and 100% on all other retirement benefits they may have.

  7. Supply chain finance - Wikipedia

    en.wikipedia.org/wiki/Supply_chain_finance

    The reverse factoring method, still rare, is similar to the factoring insofar as it involves three actors: the ordering party (customer), the supplier, and the factor. Just as with basic factoring, the aim of the process is to finance the supplier's receivables by a financier (the factor), so the supplier can cash in the money for what they sold immediately (minus any interest the factor ...

  8. The Economist Democracy Index - Wikipedia

    en.wikipedia.org/wiki/The_Economist_Democracy_Index

    The Democracy Index published by the Economist Group is an index measuring the quality of democracy across the world. This quantitative and comparative assessment is centrally concerned with democratic rights and democratic institutions.

  9. Medicare (United States) - Wikipedia

    en.wikipedia.org/wiki/Medicare_(United_States)

    Lyndon B. Johnson signing the Medicare amendment (July 30, 1965). Former president Harry S. Truman (seated) and his wife, Bess, are on the far right.. Originally, the name "Medicare" in the United States referred to a program providing medical care for families of people serving in the military as part of the Dependents' Medical Care Act, which was passed in 1956. [6]