Brian McLogan
How to use the law of sines to find the missing measurements of a triangle
👉 Learn how to solve for the length of the sides and the measures of the angles of a triangle using the law of sines. The law of sines is used in determining the length of the opposite side to a known angle measure or the measure of the...
Brian McLogan
How to solve a proportion using the cross product
👉 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
Using Data to Make an Inference
In this short video we will answer a standardized math test question where we are as to make an inference based on a sampling of collected data from a survey. We will use what we know about proportionality to predict what a larger...
Brian McLogan
Solving a proportion with x on both sides
👉 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 to solve a proportion in two different ways ex 9, 5/2n = 3
👉 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 a rational Equation
👉 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
Proportions and word problems set it up and solve
👉 In this video, you will learn how to solve a word problem using proportions. To do this we will identify our unknowns as well as our ratio of terms. We will then proceed to set up a proportion and solve it.
Curated Video
Solving for Unknown Percentages Using Various Methods
In this video, we will teach viewers how to solve for unknown percentages using various methods, including the bar model, table, and proportion. We will walk viewers through three examples, including how to calculate the percentage...
Brian McLogan
Special segments of similar triangles medians
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Brian McLogan
How do you solve proportions
👉 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 a proportion in two different methods 9/q = 15/10
👉 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 write the percent of a number, 7% of 35
👉 Learn how to solve problems using percents. When solving problems with percents we will either convert the percents to decimal form or use proportions to solve. We will look to solve for the percent of change, the original price,...
Brian McLogan
Determining if two ratios create 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
Given similar figures determine your missing values
Learn how to solve with similar polygons. Two polygons are said to be similar if the corresponding angles are congruent (equal). When two polygons are similar the corresponding sides are proportional. Knowledge of the length of the sides...
Curated Video
Calculating Area from Scale Drawings: Ratios and Proportions
In this video, the teacher explains how to calculate the amount of material needed to make small flags for each student in a school. They demonstrate the use of ratios and proportions to find the area of the flags and apply the concept...
Brian McLogan
Applying direct variation to a proportion so solve for the missing variable
👉 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...
Global Health with Greg Martin
R0 and vaccine coverage. How to use a COVID-19 vaccine to get to herd immunity and beat Coronavirus
R0 (the basic reproductive number) tells us more than just how many people will be infected in a totally susceptible population. It can be used to calculate the how much vaccine coverage is needed to get to herd immunity. As COVID-19...
Brian McLogan
Learn to solve a proportion with 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
Solving a proportion using the cross product ex 7, 8/5 = (4/3x)
👉 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
Geometry - What is the triangle bisector theorem
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides...
Curated Video
Similar Figures, Angle-Angle Similarity and Indirect Measurement
In this video lesson, we learn about similar figures and indirect measurement. The teacher explains how to identify similar figures, find missing side lengths using proportional ratios, and use angle-angle similarity to solve problems....
Brian McLogan
Learn how to find 8% of 40
👉 Learn how to solve problems using percents. When solving problems with percents we will either convert the percents to decimal form or use proportions to solve. We will look to solve for the percent of change, the original price,...
Brian McLogan
Algebra 2 - Determining direct variation from a table
In this video I will show you how to use direct variation to help determine the missing variable, as well as how to determine if an equation is an example of direct variation or not. For an equation to be an example of direct variation...
Brian McLogan
Algebra 2 - How do you solve proportions two methods 5/b = 3/9
Algebra 2 - How do you solve proportions two methods 5/b = 3/9