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How To: Solve direct variation model word problem
This video walks you through the steps of solving direct variation model word problem. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Graph a line with slope intercept form (y = mx + b)
This video walks you through the steps of graphing a line with slope intercept form (y= mx + b). This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve percent problems
This video walks you through the steps of solving percent problems. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve scale and indirect measurement problems
This video walks you through the steps of solving scale and indirect measurement problem. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve ration and proportion problems
This video walks you through the steps of solving a ration and proportion problems. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Use a Linear Model
This video walks you through the steps on how to use a linear model. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Predict answers using linear models
This video walks you through the steps of predicting answers using linear models. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve inequalities using multiplication and division
This video walks you through the steps of solving inequalities using multiplication and division. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve exponential decay functions
This video walks you through the steps of solving a exponential decay function. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve compound inequalities
This video walks you through the steps of solving a compound inequality. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Apply scientific notation
This video walks you through on how to apply scientific notation. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Apply zero, negative, and fractional exponents
This video walks you through the steps of applying zero, negative, and fractional exponents. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Solve exponent properties involving products
This video walks you through the steps of solving exponent properties involving products. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you feel like your back in the classroom but rather comfortably from your home.
How To: Find the equation of a perpendicular & parallel line
This video shows how to find the equation of the line perpendicular and parallel to a given line. The video starts off with an example, given the lines and the slopes (m). When 2 lines are parallel to each other, they have the same slope. When 2 lines are perpendicular to each other, the slopes multiplied together will give -1. Knowing these rules, the tutorial maker provides an example with numbers. He then leads each step of the process. Each step is written out in either black, red, blue o...
How To: Find the volue and surface area of a cylinder
This video both shows the viewer how to calculate the volume and surface area of a cylinder. It also explains what these different numbers mean. The volume is the amount of ‘matter’ that the cylinder can hold. The surface area is literally the area of the cylinders curved face and the two end circles.
How To: Find the area of a circle with a given radius
This video describes how to find the area of a circle given a radius of 4cm. The video begins by describing the formulas needed to find the area of the circle. The narrator cautions the viewer on a few common mistakes that people frequently make while using these formulas, such as not properly squaring the radius of the circle. The solution to the formula for a 4cm radius is 50.24 cm^2. The video then demonstrates that this value makes sense by overlaying a grid onto the circle and visually s...
How To: Use a protractor to measure an angle
This video in the Education category will show you how to use a protractor to measure an angle. This video is from Brightstorm. In Geometry it is important to know how to measure an angle. This is a very simple and easy process. In order to measure an angle, you will need a protractor. Every protractor has a base and a center point marked on the base. You will put the center point on the vertex of the angle. Then align the base line of the protractor perfectly on one side of the angle. Now ch...
How To: Convert fractions to decimals
This video explains how to convert fractions to decimals by providing a good example. 1. To better explain the notion draw a box divided into sections to represent the 1 whole. 2. In this example the fraction used is 7/10. So, you have to color in 7 out of the 10 sections that make up the box. 3. To make the conversion to a decimal is now even simpler. Since not all the boxes are shaded the number must be less than 1, so start by writing 0. 4. The next step is to check the number of boxes you...
How To: Simplify square roots w/ product & quotient rules
In this math tutorial, you will learn how to simplify square roots with product and quotient rules. To begin, you will need to multiply the square roots so that the two square roots in your equation are reduced down into one. The rule for non-negative "A" and "B" is that the square root of "A" multiplied by the square root of "B" yields the square root of A x B.
How To: Use a TI-89 to calculate nCr
This video shows you how to do a mathematical representation on computing the nCr function using a TI-89 calculator. You can write the nCr notation in different forms. It can be simplified from nCr to C(n,r). The symbol can either be read "n choose r" or "n taken r at a time" which are from it's probability applications. On the example to find "26 choose 17", go to the Home screen of the TI-89 calculator and then go 2nd 5 which is Math. Go choose probability and then to nCr to type in (26,17)...
How To: Calculate the circumference of a circle
This video shows how to calculate the circumference of a given circle. The video first describes the circumference or perimeter of a circle as the distance around the outside of a circle. To find the circumference we need either the radius or the diameter of the circle. When you know the diameter of the circle, the formula to find the circumference denoted by 'C' is 'pi' times the diameter, where 'd' is the diameter and 'pi' is a constant, the approximate value being 3.14. And when you are gi...
How To: Find the equation of a perpendicular line easily
In this video the instructor shows how to find out an equation of a perpendicular line. If you need to find the equation of a line passing through the given point and is perpendicular to another line, the first thing you need to do is compute the slope of the given line. Obtain the slope of the equation by writing it in the form of y = mx + b. Now the product of slopes of two perpendicular lines is a negative one. So the slope of our required line will be the negative inverse of the slope of ...
How To: Simplify expressions involving numeric radicals
In this video tutorial, viewers learn how to simplify expressions involving numeric radicals. This can be very frustrating to work with if you have not memorized the tables of square, cubes and fourths. If you are taking the square root of a number that is not a perfect square and you wish to simplify it, the key is to write it as the product of a perfect square or another number. This video is very descriptive and clearly explains the functions of the formula. This video will benefit those v...
How To: Work with complex numbers
In this algebra video the instructor shows how to work with complex numbers. When you have a positive number under the square root, you can easily find its value by writing it in the form of product of numbers, and then solving. That is, to find the square root of a positive number, you can find another number which multiplied by itself gives the original number. This new number becomes the square root of the original number. But when you are asked to find out the square root of a negative nu...
How To: Add decimals together
Learn how to add the decimals together in simple and easy steps. 1. First practice adding two normal digits using the traditional adding method and get your answer correctly. 2. Now to add the decimals together use the same example by including decimal points to them. 3. The adding will also be the same traditional method except that you have to place a decimal point in the exact location of your answer. 4. Now take another example (E.g.: 3. 33+4. 2) and add it in the same way by placing a ze...
How To: Find the area and volume of prisms
This helpful video gives simple step by step instructions on how to find area and volume of prisms. To find the area of a prism you must first find the area of the base, it may be rectangular, triangular, or otherwise. You must then multiply the area of the base times the height. Examples of all types of scenarios are given to better explain the method of finding the area. To find the volume of a triangular prism you must first find the area of the base. The next step is multiplying the area ...
How To: Add fractions with same denominator with Virtual Nerd
This video instructs on how to find the sum of fractions that have the same denominator. In order to do this, all that needs to be done is to add the different numerators together, then put the sum of those numbers over the common denominator. The example used is 2/9 + 1/9 + 5/9. The first step is to add the numerators which gives you 2 + 1 + 5/9. Then simplify the fraction adding 2 + 1 + 5 which equals 8. That is your numerator. The denominator does not change because it is common, so the fi...
How To: Graph the slope of a line through two points
If you want to learn how to get and graph the slope of a line using two points, you should watch this. 1. Let your two points be (x1 , y1) and (x2 , y2). Draw a straight line that connects the two points. 2. Use the formula, m = change in y over change in x , for finding the slope which is represented by the variable m. 3. The simpler form of the formula would be m = (y1 - y2) / (x1 - x2). 4. If you were given two points, just substitute the values in the given formula. 5. For example, the tw...
How To: Calculate the area of a triangle with a simple method
There are only few steps to find the area of the triangle in a simple method. First you consider a triangle, and to find the area in a simple manner just add the triangle of same properties and side lengths as same as the first one and attach to it. Then we know the formula to calculate the area of the square. Then find area of the square by side*side. Then you will get the area of the square, now divide the area by two, as we add another triangle. Then the area of the triangle will be obtain...
How To: Simplify radicals before adding or subtracting
This video in the Education category will show you how to simplify radicals before adding or subtracting. By doing this you will find all like radicals which will then ensure that you have all radicals in the simplest form. Let’s say you want to subtract square root of 45 from 3 square roots of 20. Now square root of 45 can be written as square root of 9 x square root of 5. Because, 9 and 5 are factors of 45. Similarly, 3 square roots of 20 can be simplified to 3 x square root of 4 x square r...
How To: Evaluate combinations of functions from graphs
YouTube user NotesCollegeAlgebra teaches you how to evaluate combinations of functions from graphs. You start off with a graph and some functions. (f+g)(-3), (g/f)(0) and (fg)(-6). You start looking at the graph and the first line and you get (f+g)(-3)=f(-3)+g(-3)=3+1=4. (g/f)(0)=g(0)/f(0)=2/-3=-2/3. (fg)(-6)=f(-6)g(-6)=(-3). But then when you want to find out g(-6) you realize -6 is not in g's domain. So the answer to the last equation is that it doesn't exist.
How To: Solve simple algebraic equations
This is a great series of videos showing you how to solve simple algebraic equations. The first video demonstrates solving equations using addition or subtraction, the second deals with solving equations using multiplication or division, and the third shows how to solve multistep equations.
How To: Solve 2nd degree polynomials with a quadratic equation
These videos are a great tutorial to solving 2nd degree polynomials using the quadratic equation. Through simple step by step instructions, you can learn this very basic algebraic principle.
How To: Get decimal forms of rational numbers
This video series demonstrates how to convert a rational number to a decimal. A rational number is a ratio of two numbers. In other words, these fractions can be changed into decimal form. Get decimal forms of rational numbers - Part 1 of 5.
How To: Convert recurring decimals to fractions
This series of videos demonstrates how to do conversions of recurring decimal numbers to fractions. In a few simple steps, you'll be able to transfer these repeating numbers to simple fractions.
How To: Factor trinomials with 2 variables & GCF by grouping
In the video, the process of factoring trinomials is described. A trinomial that cannot be easily factored in its original form is shown. It is simplified by pulling out the greatest common factor. After that, a trinomial that is easier to factor is shown. Next, the simplified trinomial is broken up into four terms so that factoring by grouping can be done. Once again, a common factor from each pair is taken so that two binomials are created. Once the greatest common factor is added back with...
How To: Graph linear equations using y=mx+b
This video is an instructional guide about Graph Linear Equations presented in algebraic form. It is an easy to follow, step by step guide to solving such equations using the graph intercept formula. The first example equation is Y = 2x -1 over y = mx + b. The video then shows you how to breakdown the equation into manageable sums using fractions to represent the data, and then presents the formula for interpreting the answer from these sums onto the graph co-ordinates. The second and third e...
How To: Solve a system of equations through graphing
This video shows the viewer how to solve simultaneous equations using a graph or ‘graphing’ as it is referred to. This is done by first rearranging both equations so that y is the object of both equations. The equations can then be solved via substitution – the video does not cover this. Using graphing the next step is to plot both of the lines onto the graph. This can be done by substituting varying values of x to give the y co-ordinates. The solution to the linear equation should be the poi...
How To: Use number patterns in math
In this video the instructor shows how to identify patterns in numbers, figures, letters. When given a pattern like 1, 2, 4, 7 try to find the change in each of the successive numbers in the pattern. If you observe carefully you will notice that the difference of the second and first number is one. Similarly the difference of the third and second number is two and this pattern keeps repeating. So this pattern is generated by taking 1 and adding 1 to it. To the next number add 2 to get the thi...
How To: Use a TI89 calculator to graph linear equations
This video shows the user how to use a T189 calculator to plot linear equations. The video demonstration is done using an ‘on screen’ representation of the calculator – there are also verbal instructions. The equations are plotted on the same axis by selecting the ‘y=’ function. The corresponding values of y in terms of x are then inputted into the graphical calculator. Once this has been done for every equation you can get the calculator to display the graph. This then allows you to compare ...