Education & Communication 2024, October

It is easy to calculate the diameter of a circle, if you know the other dimensions: the radius, the circumference or the area. You can calculate it even when you only have one circle design. If you want to know how, read on. Steps Method 1 of 2:

English is the universal language. Nowadays, knowledge of this language is a must for doing business internationally. For this reason, many working people want to improve their knowledge of the English language. Steps Step 1. Take a course to improve your basic knowledge of the English language Without a great basic knowledge of the language, continuing would be a Pyrrhic victory.

There is no math exam that does not include the calculation of the hypotenuse of at least one right triangle; however, you don't have to worry as this is a simple calculation! All right-angled triangles have a right angle (90 °) and the side opposite this angle is called the hypotenuse.

Whether you're drawing a blueprint, doing a hand job, calculating how much fence to use to protect your garden jacuzzi, or just solving a math problem, knowing how to find the circumference of a circle will help you find the solution to your problems.

A polynomial contains a variable (x) raised to a power, called "degree", and several terms and / or constants. Decomposing a polynomial means reducing the expression to smaller ones that are multiplied together. It is a skill that is learned in algebra courses and can be difficult to understand if you are not at this level.

Column divisions are a fundamental concept of arithmetic; the method allows you to find the quotient and the rest of the operations involving at least two digits. If you learn this method, you will be able to divide numbers of any length, both integers and decimals.

Mental mathematics is the ability to use applied algebra, mathematical technique, brain power and inventiveness to solve mathematical problems. More precise details of some of these techniques are also described in other wikiHow articles. Prerequisite :

Using food to find out the value of pi? Believe it or not, of all the endless ways to approximate the most widespread irrational number in the universe, few are more interesting or satisfying than throwing food into your kitchen. In fewer steps than it takes to surround your home with loafs of bread, you too can add a slice more to your dinner menu.

The Mandelbrot ensemble is made up of points drawn on a complex plane to form a fractal: an impressive geometric figure where each part is a miniature copy of the whole. It was possible to see the fascinating images hidden in the Mandelbrot ensemble as early as the 16th century, thanks to Rafael Bombelli's understanding of imaginary numbers … but it was only after Benoit Mandelbrot and others began to explore fractals with the help of computers that this secret universe was rev

Calculating the area of a polygon can be simple if it is a figure such as a regular triangle, or very complicated if you are dealing with an irregular shape with eleven sides. If you want to know how to calculate the area of polygons, follow these instructions.

The "rule of 72" is a rule of thumb used in finance to quickly estimate the number of years it takes to double a sum of principal, with a given annual interest rate, or to estimate the annual interest rate it takes to double a sum of money over a given number of years.

A cylinder is a simple geometric shape made up of two parallel circular bases of equal size. If you want to know how to calculate the volume, you are in the right place; all you need is to know its height (h) and the radius of one of the two bases (r).

In a course on differential equations, the derivatives studied in an analysis course are used. The derivative is the measure of how much a quantity changes as a second varies; for example, how much the speed of an object changes with respect to time (in comparison to the slope).

Before the advent of computers, students and professors had to calculate square roots by hand. Several methods have been developed to deal with this cumbersome process: some give approximate results, others give exact values. To learn how to find the square root of a number using just simple operations, read on.

The consumer price index (CPI) measures the price changes of a product over a given period and is used as an indicator of both the cost of living and economic growth. It is calculated by taking into consideration the prices of the goods and services in common use that form a basket.

Bet with your friends that you are the fastest to add up five consecutive numbers. Use it as a fun joke with friends or (if you go to school) do it to amaze your teacher! Steps Method 1 of 4: Using the number in the center Step 1.

You will usually use a ruler or tape measure to make measurements in centimeters. There are also methods for estimating length in centimeters and for converting measurements made with other units to the equivalent value in centimeters. Steps Method 1 of 4:

A Diophantine (or Diophantine) equation is an algebraic equation whose solutions are sought for which the variables assume integer values. In general, the Diophantine equations are rather difficult to solve and there are several approaches (Fermat's last theorem is a famous Diophantine equation that has remained unsolved for over 350 years).

You can add up a series of consecutive odd numbers by hand, but there is a much easier method of doing this, especially if you have a lot of digits to add up. Once you learn a simple formula, you will be able to add up these numbers very quickly without using a calculator.

In algebra, data inversion operations are often used to simplify the initial problem, which would otherwise be very complex to solve. For example, if you are required to perform division with a fractional value, it is much easier to multiply with its reciprocal.

You are about to calculate a power factor correction, which allows you to measure real, apparent, reactive and phase angle power. If you consider the equation of the right triangle, to calculate the angle you need to know the formulas of the cosine, the sine and the tangent.

In Canada, the UK and many European countries, temperatures are measured in degrees Celsius or centigrade (° C). In the USA, Belize, the Bahamas, the Cayman Islands and Palau, the temperature is measured in degrees Fahrenheit (° F). Fortunately, converting between these two units of measurement is very simple, in fact you only need to use the correct formula.

Geometry is a tough subject for many students. Several concepts are totally new, so learning is particularly complex for this reason as well. By combining good study habits and proper learning strategies, you can get good grades. Steps Step 1.

An "improper" fraction is a fraction whose numerator is greater than the denominator, for example 5 / 2 . Mixed numbers are mathematical expressions made up of an integer and a fractional part, for example 2+ 1 / 2 . It is usually easier to imagine two and a half pizzas (2+ 1 / 2 ) rather than "

Converting a simple fraction to a decimal number is pretty easy once you understand how it works. You can do this with a simple column division, multiplication or even using a calculator if you prefer. Once you master the technique, you will be able to move from decimal numbers to fractions (and vice versa) with agility.

Practicing breaking down numbers allows students to understand the general patterns and relationships between the digits of large numbers and the numbers in an equation. You can decompose numbers into hundreds, tens and units or break them down into addends.

You will usually use a ruler or tape measure to make measurements in millimeters. If you don't have one, there are also methods for estimating a length in millimeters. Similarly, if you have a measurement expressed in another unit of length, you can convert that measurement to the equivalent value in millimeters.

Subtraction is one of the most important knowledge we have. We use it all the time. This article explains the fundamentals of subtraction. Steps Method 1 of 3: Steps for subtracting integers Step 1. Find the major number A problem of type 15 - 9 will require a different technical display than for problem 2 - 30.

A rectangle is a flat quadrilateral with four right angles and whose parallel sides are equal to each other; if a rectangle has all four sides equal, it is called a square. The perimeter of a geometric object is the sum of the lengths of all sides.

The first thing to understand is that they are there two main categories of percentage problems: direct comparison questions (such as "35 is 5% of what number"?) e requests for increase / decrease (like, "if a blouse that costs $ 45 is originally on sale at 20% off, what's the new price?

Calculating the volume of a rectangular prism is easy once you know the length, height and width. If you want to know how to calculate the volume of a rectangular prism, follow these simple steps. Steps Step 1. Find out the length of the rectangular prism Length is the longest side of the prism base rectangle.

Degrees and radians are two equivalent ways to measure angles. A circle contains 360 degrees, which is equivalent to 2π radians. This means that 360 ° and 2π radians numerically represent the round angle. This means that 180 °, or 1π radians, represents the flat angle.

Doubling large numbers may seem difficult at first, but it gets easier as you practice. There are various methods you can use to double a number. Learn them all, then use the one that is easiest for you the next time you face a doubling problem.

With all the different units of measure and standards in the world for making measurements, it might be helpful to understand how to convert units of measure yourself. Some conversions are easy, others are more difficult and require the help of a calculator.

In economics, marginal utility (abbreviation "UM") is a way of measuring the value or satisfaction obtained by a customer consuming a product. As a general definition, UM is equal to change in total utility divided by the change in the quantity of goods consumed .

The total surface of a geometric solid is given by the sum of the area of each of the faces that compose it. To calculate the area occupied by the surface of a cylinder, it is necessary to calculate the area of the two bases and add it to the area of the cylindrical section between them.

The axis is the pendicular line at the midpoint of the two extremes that identify the segment. To find its equation, all you have to do is find the coordinates of the midpoint, the slope of the line that the extremes intercept and use the anti-reciprocal to find the perpendicular.

Calculating the number of terms in an arithmetic progression might seem like a complex operation, but in reality it is a simple and straightforward process. All that needs to be done is to insert the known values of the progression into the formula t = a + (n - 1) d, and solve the equation based on n, which represents the number of terms in the sequence.

Maybe you're trying to answer a question like "If a blouse that originally costs € 45 is on sale at 20% off, what's its new price?" These types of questions are called "percentage increase / decrease" and are a fairly basic math crux.

In the metric system the gram is used to measure the weight of small objects or small quantities while the kilogram is reserved to indicate the mass of very heavy elements. A kilogram is made up of 1,000 grams. This equivalence indicates that, to convert a weight expressed in grams into kilograms, it is simply necessary divide the number of grams by 1,000 .