Brian McLogan
What is cross multiplication
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
Solve Rational Equations | Rational Functions | Free Math Videos
In this video we will explore how to solve rational equations and label extraneous solutions. We will solve a variety of equations using multiple techniques. I make short, to-the-point online math tutorials. I struggled with math growing...
Curated Video
Similar Figures
In this video lesson, we will learn the definition of similar figures. Similar figures are figures that are the same shape but different sizes. Similar figures have corresponding sides that are proportional and corresponding angles that...
Brian McLogan
How to cross multiply to solve a proportion
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
Learn how to apply the cross product to solve the proportion ex 10, (x - 5)/4 = 3/2
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
Summary for solving rational equations
👉 Learn about solving rational equations. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. There are many ways to solve rational equations, one of...
Brian McLogan
Solving a literal equation that is a proportion ex 13, x/a = y/b; solve for x
👉 Learn how to solve literal equations involving formulas. A literal equation is an equation where the unknown values are represented by variables. To solve a literal equation means to make one of the variables the subject of the...
Brian McLogan
Solve y using cross multiplication - literal equation
👉 Learn how to solve literal equations. A literal equation is an equation where the unknown values are represented by variables. To solve a literal equation means to make one of the variables the subject of the formula. When the literal...
Brian McLogan
Solve a proportion by multiplying by the LCD ex 13, (2n - 9)/7 = (3 - n)/4
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Curated Video
Proportions
In this video lesson we will learn how to write and solve a proportion. We will use a proportion to determine if two ratios are equal. We will learn that if two ratios form a proportion there is a proportional relationship. We will solve...
Brian McLogan
Master Solve for the missing variable when y varies directly with x
Master Solve for the missing variable when y varies directly with x
Flipping Physics
Angular Momentum and a Pulley Mass System
Angular momentum is used to determine the acceleration of a pulley mass system. two alternate solutions are shown, and the acceleration is demonstrated. This is an AP Physics C: Mechanics topic.
Content Times:
0:00 The Problem
1:50...
Brian McLogan
Can You Solve These 26 Literal Equations?
In this video I will show you how to solve 26 different examples of literal equations. Literal equations are equations with 2 or more different variables. The process for solving literal equations is the same as one variable equations....
Brian McLogan
How to solve a proportion with an expression over another ex 18, (c + 1)/(c - 2) = 4/7
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
Solving Rational Equations | Three Mistakes
Being a teacher for many years I can tell you I know where students make their mistakes. In this video I will show you the top three mistakes I see students making when solving rational equations
Brian McLogan
Master Solving for the missing variable when y varies directly with x with fractions
Master Solving for the missing variable when y varies directly with x with fractions
Math Fortress
Calculus III: The Cross Product (Level 5 of 9)
This video goes over various algebraic properties of the cross product. Proofs of these properties are also presented as well as 4 examples.
Brian McLogan
Solve a proportion by multiplying by your denominator on both sides ex 11, 5 = (4–3y)/5
👉 Learn how to solve proportions. Two ratios are said to be proportional when the two ratios are equal. Thus, proportion problems are problems involving the equality of two ratios. When given a proportion problem with an unknown, we...
Brian McLogan
How to use proportionality of a triangle to determine if two lines are parallel
👉 Learn how to solve for the unknown in a triangle divided internally such that the division is parallel to one of the sides of the triangle. The triangle proportionality theorem states that if a line is parallel to one side of a...
Brian McLogan
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Tutorial-Solve a proportion when the variable is in denominator and numerator ex 16, (3+2x)/(3–2x)=3
Flipping Physics
Cross Product Torque (with a Cross Product Review)
Torque as the cross product is introduced. How to actually perform the cross product using matrices is reviewed and 4.5 examples are walked through. This is an AP Physics C: Mechanics topic. Content Times: 0:00 Torque Review 0:55 Cross...
Brian McLogan
Major mistake when solving rational equations
👉Here is one of the major mistakes I see when students are solving rational equations. Timestamps: 0:00 Intro 0:26 Example #1 1:08 Example #2 2:12 Example #3 3:37 Example #4 4:08 Example #5 5:00 Example #6 6:41 Example #7 7:54 Example #8...
Virtually Passed
Relative velocity (with rotating axes) Proof
If the relative axes xy aren't rotating (w = 0) then the velocity equation becomes Va = Vb + Va/b However, in general, relative reference axes can rotate and the following relative velocity equation becomes Va = Vb + Vrel + Vp/b Note...
Brian McLogan
How do you solve rational equations
👉 Learn about solving rational equations. A rational expression is an expression in the form of a fraction where the numerator and/or the denominator are/is an algebraic expression. There are many ways to solve rational equations, one of...