Math

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When and where did numbers originate?

In a royal decision which had a positive impact on business relations, the Babylonians standardized the system of weights and measures used in their transactions. Still based on the number 60, the Babylonians devised a calendar containing lengths of 30 days, each within 12 months and totaling a 360-day year. They also used the value of 360 to divide a circle into equal parts which has remained the standard measurement of the degrees within a circle in modern mathematics.

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What is the best way to practice third-grade math online?

A student or parent can create a free account at any of these sites, but the sites also allow users to practice without signing up. Choose the grade and mathematical subject, and start practicing. A few of the sites offer how-to videos for different concepts. The sites are primarily designed for practicing concepts learned in the classroom, but they are not classroom substitutes.\nMost of the sites gear toward children, with pictures or animations of cartoon characters that assist and encourage the student while practicing. For a student with a user account, these sites also track the student&..

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Who is considered to be the father of geometry?

Euclid was alive during the reign of Ptolemy I from 323 to 283 B.C. He published "Elements" around 300 B.C., and it soon became the main textbook for teaching geometry. In "Elements," Euclid uses a small set of axioms and deductive logic to construct the framework of what is now known as Euclidean geometry.\n"Elements" was one of the first mathematical works to be printed after the invention of the printing press and is thought to be second only to the Bible in the number of editions published.

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What is Calculus IV?

Calculus IV typically begins with the study of the integration of functions of two and three variables. This is followed by the study of the calculus of vector fields and their differential operators, including divergence, gradient and curl. Various types of integrals of vector fields and their fundamental theorems are also studied.\nThere are two major branches of calculus, differential calculus and integral calculus. Differential calculus concerns rates of change and slopes of curves, while integral calculus concerns accumulation of quantities and the areas under and between curves. Some min..

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Can you take free math courses online?

MIT has a selection of OpenCourseWare and is committed to offering all of the materials needed to study any of the subjects its professors teach, from undergraduate to graduate classes, to as many people as possible. Its classes tend to be higher-level mathematics classes than those of Alison, which is focused more on professional development, with more courses in practical, everyday mathematics taught at the high school and undergraduate levels.

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What are the benefits of using a program to compute number combinations?

For instance, in RSA encryption, there is what's known as a public key and a private key. The public key has two large integers, e and n, while the private key has two large integers, d and n. Note that both keys have the same number n, which is generated by multiplying two large prime numbers to form an even larger number. Due to the relationship between e, d, and n, the number d can be found if you know both e and n. The difficulty in finding what n is lies in factoring n into the two large prime numbers. There is no current method to find this combination in a reasonable time. As compu..

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What is a direct variation graph?

A direct variation graph is the visual representation of the equation y=kx, in which two variables, x and y, are displayed. The variable k is the constant of proportionality, defined as the constant ratio between the two quantities. When the value of the x variable is increased a certain amount, the y variable increases the same amount.\nWhen depicting direct variation, a graph is plotted onto a coordinate plane. The points that are plotted are found using an equation. The values of the x variable are plotted on the x axis, which is the horizontal axis running left to right in the graph. The v..

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How do you calculate power?

Determine how much force was exerted.Force is the fundamental component of motion, and it is measured in newtons. Assume, for example, that you're dealing with a 50-kilogram person under normal Earth gravity. Determining the force is a matter of multiplying the mass by the gravitational pull of Earth, yielding a result of 490 newtons. For basic power calculations, forces such as friction are often disregarded.Multiply the force by the distanceBecause the person weighs 490 newtons, multiplying it by 5 yields 2,450. The unit for work is the joule. Therefore, the person does 2,450 joules of ..

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What is the formula to convert a mg/L concentration into a percentage?

Concentration of a solute can also be represented as a percentage by dividing the mg/L concentration, which also means ppm or "parts per million," by 10,000 to get parts per 100, or percentage.\n\nThe ppm or mg/L notation is used more often because it is easier to comprehend. Percentages are used in cases when there are high concentrations of solute. Values given in ppm represent mass per mass concentration, while mg/L represents a mass per volume concentration.

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How do you calculate cubic feet?

The cubic foot is a standard measurement of volume in the United States, Canada and the United Kingdom. The volume of an object can be used to determine how much that object can hold in terms of capacity. Refrigerator and car trunk space are both described in how many cubic feet they can hold. For instance, a 4 feet long, 2 feet wide, 1 foot high car trunk has 8 cubic feet of space (4 x 2 x 1 = 8).

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