Math

Refine Search

What is a vertical curve calculation used for?

A vertical curve allows for a vertical transition between sloping roads and thus provides a gradual inertial transition over which the altitude change can occur.\nSymmetrical parabolic curves make up the majority of vertical curves used in road design. This predominance is the result of a correctly designed symmetrical parabolic curve minimizing the inertial loads on road vehicles as they move through the curve. In addition, many official tables such as those of the American Association of State Highway and Transportation Officials are only applicable to symmetrical parabolic curves.\nCircular..

Continue Reading

How do you calculate the area of a triangle with its vertices?

A triangle's vertices represent the points of the triangle on a grid, and are written as the x and y coordinates of each point. The points can be referred to as point A, point B and point C. The formula for calculating the area of such a triangle is as follows:The y coordinate of point C must be subtracted from the y coordinate of point B. This number must be multiplied by the x coordinate of point A. The y coordinate of point A must be subtracted from the y coordinate of point C. This number must be multiplied by the x coordinate of point B. The y coordinate of point B must be subtra..

Continue Reading

How do you convert a square centimeter to a square meter?

Find the measurement for a square meterA square meter has a length and width of 1 meter, so it can also be expressed as 1 meter squared.Convert 1 meter squared to centimeters squaredBecause 1 meter equals 100 centimeters, 1 meter squared equals 100 centimeters squared, which is 100 x 100, or 10,000 square centimeters.\nDivide 1 square centimeter by 10,000 square centimeters\nDivide 1 square centimeter by 10,000 square centimeters. The result equals 0.0001 square meters.\n

Continue Reading

How do you write 1.5 as a fraction?

To write 1.5 as a fraction, the decimal .5 must be expressed over 1, then multiplied so that it can be expressed as a fraction. After the .5 portion of the numeral has been converted, the final answer can either be expressed as mixed-number fraction or improper fraction. To multiply .5 by 1, it should be expressed as such:.5/1Next, the top and bottom must be multiplied by 10, because there is one digit after the decimal. If there were two, as in .35, the fraction would be multiplied by 100.Now, the answer appears as 5/10.When this number is further reduced, it is now represented as the fracti..

Continue Reading

What is BODMAS in mathematics?

An example of this is the equation 18 + 5 x 2, which may be interpreted as adding 18 and five then multiplying by two. This interpretation gives a different answer to the same question, so BODMAS exists to clarify when each operation should be performed. Multiplication comes before addition, therefore the equation should be solved by multiplying five and two, and then adding 18 for a total of 28.

Continue Reading

How many babies are born each year?

In 2012, there were 3,952,841 births in the United States, according to the CDC. This equates to a birth rate of 12.6 per 1,000 population, or roughly one birth every 8 seconds. This rate is small when compared with the rates in developing countries, especially those in Africa. In 2012, Niger's birth rate of 50.06 per 1,000 population was the highest in the world, while the United States placed 147th on the same list compiled by Index Mundi.

Continue Reading

What is 6.02 times 10 to the 23rd power?

According to the Encyclopaedia Britannica, Avogadro’s number is the number of units, usually atoms or molecules, found in one mole of any substance. This means that a mole, by definition, always contains the same number of units, regardless of the substance.\nA mole is related to atomic weight or mass. For example, one mole of carbon-12 atoms has an atomic weight of 12 grams, while a mole of oxygen, which would also contain an Avogadro's number of units, has an atomic weight of 16 grams. This shows that oxygen has a greater mass than carbon.

Continue Reading

What is a well-defined set in mathematics?

Another example of a well-defined set is "the set of integers from -3 to 3, inclusive." This set clearly contains -3, -2, -1, 0, 1, 2 and 3 and only those integers.\nOn the other hand, "the set of lucky numbers" is not well-defined because it is open to interpretation. It is not clear from the description what "lucky" means, whose lucky numbers will be considered and what has to happen for a number to be considered "lucky." There are any number of possible solution sets.\nIn set theory, it does not matter how the members of the set are arranged. Therefore, {2, 3, 4, 6, 8, 10} is identical to {..

Continue Reading

What is a pictorial graph?

In addition, pictorial graphs are usually found in physics and mathematics textbooks, according to Lock Haven University. In textbooks, they serve a purpose of clearly and simply illustrating mathematical relations. Errors or data points are not shown on these types of graphs. The accuracy relating to data used in physics requires the use of graph paper of a high quality.

Continue Reading

What are some seventh-grade algebra problems?

Math-Aids.com lists several practice problems that will help seventh graders learn how to solve an algebraic expression through the process of substitution. Substitution involves allowing a letter, called a variable, to symbolize a certain number. An equation is given using the variable and the problem is solved by substituting the number value of the variable. For example, y = 9x + 3 is given as the problem with the note that x = 7. The problem would then be solved by replacing the x with the number 7, so the substitution would be y = 9(7) + 3 and the answer would be y = 66, because, in algeb..

Continue Reading
Showing 2771 to 2780 of 3956 (396 Pages)