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[2] [3] Thus, in the expression 1 + 2 × 3, the multiplication is performed before addition, and the expression has the value 1 + (2 × 3) = 7, and not (1 + 2) × 3 = 9. When exponents were introduced in the 16th and 17th centuries, they were given precedence over both addition and multiplication and placed as a superscript to the right of ...
Bi-quinary coded decimal-like abacus representing 1,352,964,708. An abacus (pl. abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1]
Excise taxes dedicated to the Airport and Airway Trust Fund raised $9.0 billion in fiscal year 2020, down from $16.0 billion in fiscal year 2019. [2] 90% of the excise tax revenue comes from taxing passenger air fares, and the remaining 10% comes from air cargo and aviation fuel taxes.
Using EPA 2018 Fuel Economy Guides assumptions for national average pricing of $2.56/gal regular gasoline and $0.13/kWh [42] we can calculate a vehicle that is rated at 84 MPGe or 40 kW/100 Mi efficiency and has a 16.5 kW EV battery of which 13.5 kWh is usable for electric driving with an advertised range of 33 miles per charge.
Countries by household debt, loans and debt securities as % of GDP 1980 to 2022 [1]; Country 2022 2021 2018 2017 2016 2015 2010 2005 2000 1995 1990
2 I − + 2 Fe 3+ → I 2 + 2 Fe 2+ (E 0 = +0.23 V) Ferric iodide, a black solid, is not stable in ordinary conditions, but can be prepared through the reaction of iron pentacarbonyl with iodine and carbon monoxide in the presence of hexane and light at the temperature of −20 °C, with oxygen and water excluded. [ 68 ]
Under-five mortality rate per 1,000 live births (OECD-World Bank, 2020) LOCATION 2020 rate Australia 3.7 Austria 3.6 Belgium 4.2 Canada 5.0 Chile 6.8 Colombia 13.2 ...
In the fiscal year 1949–50, Pakistan recorded a national savings rate of 2%, a foreign savings rate of 2%, and an investment rate of 4%. Manufacturing contributed 7.8% to the GDP, while services, trade, and other sectors accounted for a significant 39%, reflecting a policy centered around import-substituting industrialization .