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Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology ...
The word mathematics comes from the Ancient Greek word máthēma (μάθημα), meaning ' something learned, knowledge, mathematics ', and the derived expression mathēmatikḗ tékhnē (μαθηματικὴ τέχνη), meaning ' mathematical science '. It entered the English language during the Late Middle English period through French and ...
It consists of 246 word problems involving agriculture, business, employment of geometry to figure height spans and dimension ratios for Chinese pagoda towers, engineering, surveying, and includes material on right triangles. [106] It created mathematical proof for the Pythagorean theorem, [111] and a mathematical formula for Gaussian ...
To change a common fraction to a decimal, do a long division of the decimal representations of the numerator by the denominator (this is idiomatically also phrased as "divide the denominator into the numerator"), and round the answer to the desired accuracy. For example, to change 1 / 4 to a decimal, divide 1.00 by 4 (" 4 into 1.00 ...
The Britannica disc contains 100,000 articles and Merriam-Webster's Dictionary and Thesaurus (US only) and offers primary and secondary school editions. [120] Encarta contained 66,000 articles, a user-friendly Visual Browser, interactive maps, math, language, and homework tools, a US and UK dictionary, and a youth edition. [121]
Indian mathematicians were aware of negative numbers by the 7th century, [175] and their role in mathematical problems of debt was understood. [176] Mostly consistent and correct rules for working with negative numbers were formulated, [ 177 ] and the diffusion of these rules led the Arab intermediaries to pass it on to Europe., [ 176 ] for ...