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Who created scientific notation?

Rene Descartes was the first person to use the concept of exponential notation in 1637. He used superscript to express exponents, such as 2x, where x is any power. However, scientific notation uses 10 as the base. Mathematicians use positive powers for large numbers and negative powers, or exponents, for very small numbers.Mathematicians and scientists often use scientific notation to express large numbers, such as distances between celestial objects. A number like 1,000,000,000 can be written in scientific notation as 1.0 x 109. Similarly, an infinitesimal number, such as 0.00000056 is given ..

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What is a line consisting of two endpoints and all points between those endpoints called?

Both a line and a line segment are straight one-dimensional figures that are without width or thickness, but unlike a line segment, the length of a line is theoretically infinite, stretching on forever in opposite directions.\nAnother one-dimensional figure closely related both to a line and a line segment is a ray. In geometry, a ray is conceptualized as a semi-infinite line. One side has an endpoint, as does a line segment, but the other continues endlessly, which is a feature associated with lines.

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What is the role of statistics in research?

Key aspects of statistics include finding averages/means, determining outliers on either end of a bell curve, and finding the range of quantities for set points. Also, statisticians make use of representative samples with proportionate demographics to determine factors that could affect a whole population. For example, a researcher might look for the average percentage of people who buy a particular medication, then compare it to people who reported side effects after taking that medication. This would be used to determine the likelihood of suffering harmful side effects.\nIn addition to colle..

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What is a vertex angle?

A vertex is the result of two non-perpendicular lines intersecting, often forming a corner of a shape. For example, a square has four vertices due to having four sides and four corners. The angle of a vertex is measured on the inside of the shape. For a square, the angle would be measured between two connected sides, which would always be 90 degrees.

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What does "marginal probability" mean?

Some examples of marginal probability are the probability of choosing a red card from a deck of cards or the probability of choosing an ace from a deck of cards. Neither event relies on any other event. An example of a joint probability is the probability of choosing a red ace. This outcome requires the two events to occur jointly. A conditional probability is the probability of finding an ace on a red card that has already been chosen.

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What are some different types of lines?

A line can be formed by connecting any two points and extending beyond them. Without another figure to interact with the line, it has no other intrinsic properties. Some geometric figures that are often associated with lines are line segments and rays. Line segments have two endpoints, and rays have one endpoint and extend forever in only one direction.\nInteresting line facts:\n- Two lines that exists on the same plane and never intersect are called parallel lines.\n- Two lines that intersect at a 90-degree angle are called perpendicular lines.\n- A line that splits a side or segment down the..

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What is the antiderivative of tan?

The antiderivative is also known as the integral. The integral of the tangent of x can be written as the integral of sine over cosine. Since negative sine is the derivative of cosine, the formula can be rewritten as the negative sine of x over the cosine of x. When solving the integral, the equation must take the natural log of the absolute value because it is impossible to take the natural log of a negative number.

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What are basic operations with fractions?

Addition and subtraction of fractions require a common denominator. A denominator is the number in the fraction below the line. If there is a common denominator, the numerators, the numbers above the line, are simply added or subtracted, as in this example, 1/5 + 2/5 = 3/5. If the denominator is not the same, the least common denominator of the two numbers needs to be used. The least common denominator is the smallest multiple of both denominators. In the problem 1/ 3 - 1/6 = x, the least common denominator is 6. To solve the equation, the numerator and the denominator of the first fraction ar..

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What is ST Math with JiJi?

ST Math games use interactive animations that represent mathematical concepts to improve problem-solving skills. The games are self paced. Students advance to the next level through mastering the previous level. Some of the features in ST Math include embedded assessments, immediate feedback and whiteboard integration. Teachers and students can access ST Math on a desktop computer, laptop or supported tablet, such as an iPad, iPod touch or iPhone.

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What is the definition of parametric testing?

There are two types of statistical tests: parametric and nonparametric. Rarely are nonparametric tests possible or practical, which is why parametric tests are used for almost every type of statistical analysis.An example of a parametric test is a simple t-test or chi-squared test. A t-test assumes that the data is normally distributed about the mean of the data and is designed to test the validity of a null hypothesis.

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