The abacus is a basic mathematical computing device. It is still widely used today in Africa, Japan, Russia, China and other countries as a visual aid to facilitate the learning of mathematical concepts.
A:Two early counting devices were the abacus and the Antikythera mechanism. The abacus and similar counting devices were in use across many nations and cultures. The Antikythera mechanism hails from the Greek island of Antikythera.
A:The common formula to find the area of an isosceles triangle is area equals 1/2 * base * height of triangle. The height is the line bisecting the two equal sides of the triangle and intersects the midpoint of the base.
A:A real world example of an absolute value function is any calculation in which the total depends upon simple addition of all the quantities in the function, regardless of sign. One example of such a calculation is the number of feet traveled by an athlete running around a race track.
A:There are many kinds of calculators, but most calculators have the same standard keys that allow users to complete a variety of calculations. The number keys and addition, subtraction, multiplication, division and equal signs are all very straightforward, but the functions of the other keys are not so well-known.
A:To calculate the mass of a specific number of atoms of an element, divide the number of atoms by 6.02 x 1023 and then multiply by the molar mass of the element. The process for calculating mass from the number of atoms is the same for all elements.
A:Changing square feet to square meters requires use of basic conversion where one square meter equals 10.76 square feet. Hence, one square foot equals approximately 0.093 square meters. A house that has 2,500 square feet is 232.5 square meters in size.
A:The formula to convert kilograms to pounds is pound = kilogram/0.45359237. Conversely, the formula is kilogram = pound x 0.45359237. One kilogram is equal to roughly 2.2 pounds, and 1 pound is roughly 454 grams.
A:Qualitative analysis is the scientific study of data that can be observed, but not measured. It is concerned with cataloguing the qualities of what is studied. Quantitative analysis is the study of data that can be measured, the quantities of a category of data. Each type of inquiry contributes important insights to scientific study that the other cannot.
A:The abacus is a basic mathematical computing device. It is still widely used today in Africa, Japan, Russia, China and other countries as a visual aid to facilitate the learning of mathematical concepts.
A:When purifying a substance in chemistry, use (collected mass/starting mass)*100 to calculate percent recovery. This formula is also commonly stated as (pure product recovered/crude material used)*100.
A:The word "term" is used in mathematical equations to describe either a single number, or numbers and variables multiplied together. Numerical terms are then grouped into expressions to come up with a definitive answer to the equation.
A:Math is a field of study that attempts to describe and measure the physical world using models and numbers. Mathematics uses observation, simulation and experimentation as a means of discovering the truth behind natural phenomena, human behavior and social systems.
A:Percent abundance can be calculated by finding the percentage of an isotope compared to another isotope of an element using its relative atomic mass. This is an algebraic process and depends upon several measurements.
A:200 degrees Celsius is equal to 392 degrees Fahrenheit. There is an easily memorable formula for Celsius to Fahrenheit conversions: simply multiply the original figure by 9, divide by 5 and add 32. To convert the other way, just reverse the equation by subtracting 32, multiplying by 5 and dividing by 9.
A:Operations with decimals may be solved by using addition, subtraction, multiplication or division. The same methods can be used when working with decimals and whole numbers although the decimal point must be tracked closely when solving operations with decimals to ensure the answer is correct.
A:The psi, or pounds per square inch, is a unit of pressure (P) using the foot-pound-second (FPS) system. To calculate psi, divide the force applied (F) with the area (A).
A:Casio manuals are available for free on the Casio website. Navigate to the support section of the website to find the manual for the desired Casio product.
A:The benefits of using a calculator with a fraction button include the easy conversion of decimals to fractions and the use of mixed numbers without converting them to improper fractions. The option to use improper fractions is also a benefit, as well as the ability to perform algebraic fractions.
A:A height of 5 feet 10 inches is the equivalent of 177.8 centimeters. One inch is equal to 2.54 centimeters. To convert inches to centimeters, it is necessary to multiply the number of inches by 2.54.
A:Some good math calculators are the TI-Nspire CX Cas, TI-84 Plus C Silver Edition, Casio Prizm, HP Prime and TI-89 Titanium. These calculators are capable of handling basic arithmetic, complex scientific formulas and graphing.
A:Divide the year by 100, drop the decimals and add one. Adding one is necessary because the year 1 is considered the first century, so the year 101 is the second, and so on.