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What are the Roman numerals?

The modern version of the Roman number system developed in Western Europe during the Middle Ages. It was derived and built upon from an earlier form used by the Ancient Roman Empire. Although the use of Roman numerals in mathematical computations has been outdated, this numeral system still remains popular in some areas. Roman numerals are commonly used in designing clocks, paging the introductory parts of a book, enumerating items in a list and denoting copyright dates.Certain rules apply in manipulating the base Roman numerals to form numbers. As a general additive rule, when used in combina..

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What is an outlier in math?

An example of an outlier can be seen in a group of data points taken from some athletes' performances: if there was one athlete that performed much more poorly than the other athletes, his performance is the outlier of the group.\nOutliers of a data set most seriously affect the mean. The mean is reached by adding the data points together, then dividing the sum by the number of data points.

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How do you unsquare a number?

Squaring a number is a trivial operation: the number is simply multiplied by itself. Finding the square root is often difficult unless a calculator can be used. To find the square root of a number, guess a number and square it, and then keep repeating the process until a solution is found. The more common square roots may be identifiable by observation.

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Why are graphs important?

Different graphs are used depending on the information that individuals wish to convey. Many graphs are used to concisely and clearly summarize data; the best type of graph to use depends on the type of data being conveyed (such as nominal, scale-discrete, scale-continuous and ordinal). Data summary graphs are generally nominal or contain data that can be reduced in some way; pie charts and bar charts are common and popular examples. Pie charts represent subcategories by breaking components into slices or disks, while bar charts present data in linear form. Pie charts are ideal for relaying in..

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What is the way to multiply percentages?

The decimal point will always move to the left for how many digits there are in the equation. For example, to multiply 75 percent by 20 percent, both would need to be divided by 100, to make the numbers 0.75 and 0.20. These two numbers need to be multiplied together, and the decimal point moved four places to the left, to correlate with how many numbers appear to the right of the decimal point. The answer before simplifying is .1500. Those last two zeroes can be removed, and the answer is .15.To convert .15 into an actual percentage, instead of dividing by 100, a person should multiply by 100...

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When ma*m b = m(a+b), why are a and b added instead of multiplied?

For example, m3 x m4 = m7, because m3 is equivalent to (m x m x m), and m4 is equivalent to (m x m x m x m). The product of these terms is m7, because m is multiplied by m a total of seven times. On the other hand, if m3 is raised to the fourth power, the answer is found by multiplying the exponents, so (m3)4 = m12.

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Why is 11 not pronounced as "onety-one"?

Counting items by tens is still a common practice, as it's easy to organize a decimal scale into tens. Someone who had 11 of something would think of it as 10 plus one, or one left over 10. The word for 12 follows this same format and comes from the Old English "twelf," literally "two left" (over 10).

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What number is XLVIII?

A Roman numeral may be used as many as three times in succession. In XLVIII, 40 is represented by XL. The X, which stands for 10, cannot be used four times, so it is placed to the left of the L, which stands for 50, to indicate that 10 is subtracted from 50. The eight in 48 is represented by VIII, which is five plus three, or eight.

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What is discrete data?

Discrete data can be divided into three forms. The first form is discrete numerical data, which consists of numerical measurements or counting. This form is quantitative and contains numbers. These numbers may be in the form of decimals or fractions.\nThe second form is discrete ordinal data. This data can be arranged or ordered but can not be compared to one another. An example of this would be comparing people to one another. While the people can be compared to each other, saying that one person is better than another lacks any statistical significance.\nThe final form of discrete data is qu..

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What is a quadrilateral with congruent diagonals?

Rectangles and squares are parallelograms with both pairs of opposite sides parallel and equal. The area of a rectangle is given by A=length x width and the perimeter is given by P=2(length+ width).\nA square has four equal sides. The area of a square is given by A=side x side, or side squared. The perimeter of a square is given by P= 4 x length of the side of the square.\nThe opposite angles of a rectangle are also congruent. Any two consecutive angles of a rectangle and a square are supplementary: their measures add up to 180 degrees. Every square is a rectangle but not every rectangle is a ..

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