to represent calculations. The Chinese system is also a base-10 system‚ but it has important differences in the way that the numbers are represented. The rod numbers were developed from counting boards‚ which came into use in the fourth century BC. A counting board had squares with rows and columns. Numbers were represented by little rods made from bamboo or ivory. A number was formed in a row with the units in the right-hand column‚ the tens in the next column‚ the hundreds in the next‚ and so on
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Chemical Kinetics Factors Affecting Reaction Rate OVERVIEW Chemical reactions occur at different rates. In this experiment you will consider some of the key factors that influence the rate of a reaction: nature of reactants - particle size temperature concentration catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However‚ in order for the
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that an increase in the divorce rate in 1980’s was due to changes in the law. (* - 25 minutes) The divorce rate is the number of divorces per 1000 married people per year. This number increased greatly in 1923 when 3 laws were changed. These 3 changes were: Equalising the grounds for divorce between sexes Widening the grounds for divorce Making divorce cheaper Widening the grounds for divorce in 1971 has made divorce a lot easier to obtain and produced a doubling of the divorce rate overnight
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he number theory or number systems happens to be the back bone for CAT preparation. Number systems not only form the basis of most calculations and other systems in mathematics‚ but also it forms a major percentage of the CAT quantitative section. The reason for that is the ability of examiner to formulate tough conceptual questions and puzzles from this section. In number systems there are hundreds of concepts and variations‚ along with various logics attached to them‚ which makes this seemingly
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1.Female Literacy a)Main observation: countries with low fertility rates have high literacy rates and vice versa. Tthe fertility rate of a country is thus inversely proportional to female literacy rate. At the literacy rate of 60%‚ fertility rate is about 7.72. At the litaracy rate of 100%‚ fertility rate is about 1.21. b)Cost of having a baby explicit short term: Birth and pre-natal expenses long term: Housing Food Education Transport Clothing Healthcare
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Correlation and Regression Analysis : Comparison between Gold rates and Sensex Correlation : Correlation is a statistical technique that can show whether and how strongly pairs of variables are related. Correlation is computed into what is known as the correlation coefficient‚ which ranges between -1 and +1. Perfect positive correlation (a correlation co-efficient of +1) implies that as one security moves‚ either up or down‚ the other security will move in lockstep‚ in the same direction
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Results of the study The number of blackbirds present were largely inconsistent at the times measured and possibly also had been influenced by the weather‚ which varied between warm and sunny‚ cold and sunny‚ as well as light rainy days‚ windy days and days with heavier rain as autumn progressed. Track 1. The total of blackbirds counted before the university was 30. The most counted on one day was nine individuals‚ while the smallest number present was 0‚ on a particularly cold day. The average
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Is There A Relationship Between Body Temperature and Heart Rate? Statement of Research Question: This study sets out to determine whether there exists a difference in the average body temperature between males and females. Furthermore‚ the study aims to determine whether an increase in heart rate corresponds with an increase in body temperature. Data Collection: The data was obtained from the article “What’s Normal? -- Temperature‚ Gender‚ and Heart Rate” (Shoemaker‚ Allen 1996) as found in
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In summary‚ she translates the complex jargon of neuroscience into laymen terms and explains how to apply it to the learning process. One of the major focuses in her book is the concept that the brain switches between two processes called the focused mode‚ attained by putting attention into something‚ and diffuse mode‚ attained by relaxing attention and letting the mind wander (12). In short‚ the focused mode is used to “concentrate on something that’s already
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Exchange Rate December 2014 THE EXCHANGE RATE KEY DEFINITIONS AND CONCEPTS 1. How is the exchange rate defined? The exchange rate is the price of a unit of foreign currency in terms of the domestic currency. In the Philippines‚ for instance‚ the exchange rate is conventionally expressed as the value of one US dollar in peso equivalent. For example‚ US$1 = P44.00. In every exchange rate quotation‚ therefore‚ there are always two currencies involved. 2. Why is the exchange rate important? The exchange
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