Sep 06, Rating Helpful by: Tom felton I needed for my math class. Jun 01, Rating What does x! The formula is kind of weird, but my math teacher said it was right. May 22, Rating thx by: Anonymous this really helped me in class. I was taking a test and this was on it, now I know what it means! Jan 01, Rating Factorial sign by: Anonymous Fine. The mode of explanation is easily perceptible. Dec 19, Rating! Oct 12, Rating No help by: Anonymous No help at all. Jun 30, Rating good by: Anonymous good.
Jun 03, Rating Thanks! Jan 14, Rating is now by: Anonymous thx, that was helpful. Dec 08, Rating Great by: Anonymous Great! Oct 10, Rating helpful by: Anonymous very helpful. All Rights Reserved.
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Understanding Fractions App. Math Topics. Coordinate Plane Lessons. Graphing Equations Lessons. Basic Algebra Lessons. Basic Algebra Formulas. Exponent Laws Lessons. Symmetry Lessons. Learning Fractions Lessons. Fraction Worksheets. Area is measured in square units, such as square metres m 2. For more, see our page on area, surface area and volume. An asymptote is a straight line or axis that is specifically related to a curved line. As the curved line extends tends to infinity, it approaches, but never touches, its asymptote that is, the distance between the curve and the asymptote tends to zero.
It occurs in geometry and trigonometry. A line of reference about which an object, point or line is drawn, rotated or measured. In a symmetrical shape, an axis is usually a line of symmetry.
A coefficient is a number or quantity multiplying another quantity. It is usually placed before a variable. In the expression 6 x , 6 is the coefficient and x is the variable.
The circumference is the length of the distance around the edge of a circle. It is a type of perimeter that is unique to circular shapes. For more, see our page on curved shapes. Data are a collection of values, information or characteristics, which are often numerical in nature. They may be collected by scientific experiment or other observational means. They may be quantitative or qualitative variables.
A datum is a single value of a single variable. See our page on Types of Data for more. Diameter is a term used in geometry to define a straight line that passes through the centre of a circle or sphere, touching the circumference or surface at both ends.
The diameter is twice the radius. Extrapolate is a term used in data analysis. It refers to the extension of a graph, curve, or range of values into a range for which no data exists, inferring the values of unknown data from trends in the known data.
A factor is a number that we multiply by another number. A factor divides into another number a whole number of times. Most numbers have an even number of factors. A square number has an odd number of factors. A prime number has two factors — itself and 1. A prime factor is a factor that is a prime number. The mean average of a set of data is calculated by adding all numbers in the data set and then dividing by the number of values in the set.
When the data set is ordered from least to greatest, the median is the middle value. The mode is the number that occurs most times. The basic arithmetical operations are addition, subtraction, multiplication and division.
The order in which operations are carried out in a calculation is important. The perimeter of a 2-dimensional shape is the continuous line or the length of the line that defines the outline of the shape. The perimeter of a circular shape is specifically called its circumference. Probably the greatest source of error, though, is the use of variables without definitions.
When you pick a letter to stand for something, write down explicitly what that latter is meant to stand for. Does " S " stand for "Shelby" or for "hours Shelby worked"? If the former, what does this mean, in practical terms? And, if you can't think of any meaningful definition, then maybe you need to slow down and think a little more about what's going on in the word problem.
In all cases, don't be shy about using your "real world" knowledge. Sometimes you'll not feel sure of your translation of the English into a mathematical expression or equation. In these cases, try plugging in numbers. For instance, if you're not sure if you should be dividing or multiplying, try the process each way with regular numbers. For instance, suppose you're not sure if "half of the unknown amount " should be represented by multiplying by one-half, or by dividing by one-half.
If you use numbers, you can be sure. Pick an easy number, like ten. That's more like it! You know that half of ten is five, and now you can see which mathematical operations gets you the right value. You have experience and knowledge; don't be afraid to apply your skills to this new context! Page 1 Page 2. All right reserved. Web Design by.
Skip to main content. Purplemath The hardest thing about doing word problems is using the part where you need to take the English words and translate them into mathematics. Content Continues Below. Working clearly will help you think clearly, and figuring out what you need will help you translate your final answer back into English.
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