Math: Page 30

In this video the tutor shows when to use a dotted line and when to use a solid line while graphing lines in coordinate geometry. He says that we should use a dotted line to plot an inequality which contains the symbols less than or greater than. He also says that we should use a straight line when plotting an inequality which contains the signs less than or equal to and greater than or equal to. He goes on and demonstrates this idea with some examples. This video shows how to use different...

In this tutorial the instructor shows a method to compute the interior angle sum of a polygon. He gives us the formula for the interior angle sum of a convex polygon as (n-2) * 180 where n is the number of sides of the polygon. He goes and take a 6 sided polygon as an example and does the math by substituting the value of 'n' in the equation and arrives at the result. This video clearly gives the formula and demonstrates with an example of how to calculate the sum of interior angles of a...

In this video the author shows how to do similarity transformations. He says that similarity transformations are used to draw the similar images at a different location and the k value is most important while doing this kind of transformation. He says that a negative k value tells that the copy of the shape will end at the opposite side of the origin to the original shape. He says that a positive k value tells that the copy will lie on the same side of the origin. Next thing about the k...

In this simple tutorial the author shows the basic arithmetic operations like converting a terminating decimal into a fraction. He says that the complexity depends up on the number we are converting. He asks us to imagine the decimal as a fraction with an imaginary denominator of value one. Now he intends to remove the decimal in the numerator by moving it to the right of the number and he tells us to similarly move similar number of decimal places in the denominator to maintain the original...

In this video the author shows how to find out if a Point lies on a Line in Slope Intercept Form. He shows it by an example where he takes a point, which is an ordered pair in the form (x, y) and a line, which is an first degree equation. Now he substitutes the values of x and y in the equation and checks if both the sides of the equation match. If it matches we can conclude that the point lies on the line. By following the method given in this tutorial you can find out if a given point lies on...

This video is about multiplying decimals together. The numbers to be multiplied are 1.003 times 2.8. First, you multiply like you would normally. Apply the number of decimal places. Count total number of digits to the right of the decimals. In this case it four. Apply the number of decimal places to the result. Starting from the right move four decimal places. Put the decimal point after the "2".

This is a helpful video provided by Math Problem Generator. It deals with the complex challenges of dividing variables. The audio is great and provides specific examples of dealing with multiple types of this problem. The video lays out three simple steps. The first being to simplify the coefficient, the second being to divide the variable, and the third being to deal with the results of the division. The information is clearly presented and best of all it's free. I think we all wish there...

You can't add fractions when the denominators are not the same - it's a rule in math you can't ignore!

Need a little help in your Statistics class? In this statistics tutorial hosted by The Free Math Tutor, a demonstration of how to use the Sharp EL531W calculator to find the correlation coefficient (r-value) and the equation of a regression line is given. Want some more practice? For exercises and answer sheets, go here.

Need a little help in the fraction department? Don't sweat it. Luckily, there is this two-part math tutorial on the subject of dividing fractions to help you along the way. In part one, learn how to divide proper fractions an in part two, learn how to divide mixed numbers with whole numbers.

Looking to find the standard deviation of your set of values? Standard deviation quantifies how diverse the values of your data set are, and is useful in determining how different your numbers are from each other.

Fractions can be tough, but in truth, they're one of the easiest concepts to understand in math. Figuring out fractions is the last thing you really have to worry about in math class, unless you have a horrible teacher, then you might want to check out this video tutorial to help you learn how to add fractions with unlike denominators, including how to find the LCD (lowest common denominator).

Don't be scared of fractions! Adding and subtracting fractions is not that hard once you understand how to do it.

If you fear you're off to summer school, ease the stress of uncertainty with some simple math and know when to seek help with your grades.You Will Need* A four point grading scale* Recent grades* A pen and paper* A calculator

Having problems with subtraction. For some people, mathematics doesn't come easy, but there are tricks to solving certain problems, like subtraction. Check out this math video tutorial to learn how to perform mental subtraction for math class.

From the people who brought you the Dummies instructional book series, brings you the same non-intimidating guides in video form. This is Mathematics for Dummies. Just watch this video tutorial to learn how to connect slopes and derivatives, For Dummies.

From the people who brought you the Dummies instructional book series, brings you the same non-intimidating guides in video form. This is Mathematics for Dummies. Just watch this video tutorial to learn how to integrate by parts, For Dummies.

This is a handy math trick that show you how to turn a multiplication problem into a sum problem. An unusual way to perform a multiplication. You only need to be able to sum, halve and double numbers. It is not efficient, but it is rather intriguing and fun.

This was a three flip mobius strip with one surface that yields a loop with 8 twists. It takes 6 lines to flatten it which leads to 7 zones, one less than the number of resulting twists.

Ever watch a cheesy movie and say "That monster is so FAKE!" but not really understand why? Well monstrous monsters are governed by a little biological rule called the Square-Cube Law, a scientific term combining math, anatomy and physics into one educational tool to recognize theatrical baloney when you see it. Just watch this video to see the explanation of the Cube-Square Rule, how it works and its ramifications for our favorite B-Movie pet monsters.