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: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 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: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: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 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: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 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: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: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:MathIsFun.com and StatTrek.com offer free online calculators that figure out combinations. Combinations are sets of numbers or objects that are chosen and placed in no particular order.
A:Calculators for decimals, like all calculators, perform mathematical functions by converting our base 10 numbers into base two numbers and then performing the requested function. Conceptually, decimals seem different than working with whole numbers. However, calculators handle them the same. The only added step is calculating the decimal place.
A:In order to sort numbers in ascending order, you first press the calculator's STAT key. You then press the number two on the number pad to select sorting in ascending order.
A:The Fahrenheit equivalent of 30 degrees Celsius is 86 degrees. The standard formula for converting Celsius to Fahrenheit is: Fahrenheit = 9/5 Celsius + 32. This is approximately equivalent to multiplying 1.8 times the degrees Celsius and adding 32.
A:A reciprocal calculator is a mathematical device that determines a number's reciprocal. A scientific calculator typically has a key that finds a number's reciprocal, which is also known as the multiplicative inverse.
A:Conversions may appear difficult at first; once you understand the formula needed for the conversion at hand, however, the process is quite simple. To find the Celsius value of a Fahrenheit temperature, use the formula (F - 32) / 1.8. Converting 65 degrees Fahrenheit involves substituting 65 for the F variable.
A:Percentage can be calculated on a basic calculator by multiplying with the percent button. If the percent button is not present, the percent amount can be converted to a decimal and that can be multiplied instead.
A:To find a free simple interest calculator online, visit math, business software publisher or financial sites, such as WebMath, Money Chimp and Pine Grove Software. The online calculators found on these sites may have different features, such as also calculating future values and daily interest rates.
A:Breakfast math, Shake It and Grab Bag numbers are some interesting math games for preschoolers. A few other mathematical games include sorting and cooking games.
A:A word problem calculator is a mathematics calculator that can calculate word problems, such as "If Morgan has 10 jacks and Molly has 6 jacks, and then Molly gave 2 jacks to Morgan, how many more jacks does Morgan have than Molly?" The word problem does not need to be translated into a series of symbolic math questions in order to arrive at the answer to the problem.