• #### Law of Definite Proportions - Law of Multiple Proportions

##### Science›Chemistry›Matter
Understanding the laws of definite and multiple proportions.
• #### Law of Definite Proportions - Law of Multiple Proportions

##### Science›Physics›The Atom and Quantum Physics
Understanding the laws of definite and multiple proportions.
• #### Proportions - Concept

##### Math›Algebra›Solving Equations
How to solve proportions.
• #### Solving Proportions - Concept

##### Math›Geometry›Similarity
How to solve a simple proportion.
• #### Proportions - Problem 1

##### Math›Algebra›Solving Equations
How to solve proportions when x is in the numerator.
• #### Proportions - Problem 2

##### Math›Algebra›Solving Equations
How to solve proportions when one numerator is an expression with x.
• #### Proportions - Problem 3

##### Math›Algebra›Solving Equations
How to solve word problems involving proportions.
• #### Solving Proportions - Problem 2

##### Math›Geometry›Similarity
How to solve a proportion with a variable expression.
• #### Solving Proportions - Problem 1

##### Math›Geometry›Similarity
How to solve a proportion with a variable on both sides.
• #### Solving Proportions - Problem 3

##### Math›Geometry›Similarity
How to solve a proportion with a variable expression and a variable.
• #### Proportions - Problem 6

##### Math›Algebra›Solving Equations
How to solve proportions using cross multiplication
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• #### Proportions - Problem 4

##### Math›Algebra›Solving Equations
Technique for turning percent problems into proportions that can be solved with cross multiplication
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• #### Proportions - Problem 8

##### Math›Algebra›Solving Equations
Geometry similar triangles problems that are solved using proportions
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• #### Proportions - Problem 5

##### Math›Algebra›Solving Equations
Shortcuts for using "mental math" to solve proportional relationships
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• #### Proportions - Problem 7

##### Math›Algebra›Solving Equations
Turning ratio notation with a colon into a fractional representation of a proportional word problem
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• #### Percents - Concept

##### Math›Algebra›Pre-Algebra
How to set up percent problems as proportions.
• #### Solving Radical Equations - Problem 3

##### Math›Algebra›Radical Expressions and Equations
How to solve radical proportions.
• #### Angle Bisectors and Opposite Side Ratios - Problem 1

##### Math›Geometry›Similarity
How to find a missing length created by a median in a triangle using a proportion.
• #### Secants - Concept

##### Math›Geometry›Circles
How to define a secant; how to find the length of various secants in circles.