cross multiplication 54 videos

The Cross Product of Vectors
Precalculus Systems of Linear Equations and Matrices
How to compute the cross product of two 3D vectors.
unit vectors components cross product determinant 
Additive and Multiplicative Inverses
Algebra PreAlgebra
How to find additive and multiplicative inverses.
additive inverse multiplicative inverse product sum 
Chromosomes Crossing Over  Linked Genes
Biology Mendelian Genetics
The concepts of chromosome crossing over and linked genes.
chromosomes crossing over linked genes independent assortment meiosis codominance incomplete heterozygote homozygote 
Area With the Cross Product
Precalculus Systems of Linear Equations and Matrices
How to show that the magnitude of the cross product of two vectors gives the area of the parallelogram determined by those two vectors.
cross product magnitude of vectors dot product angle between vectors area parallelogram 


Law of Definite Proportions  Law of Multiple Proportions
Physics The Atom and Quantum Physics
Understanding the laws of definite and multiple proportions.
law of definite proportions law of multiple proportions matter dalton's law compounds 
Law of Definite Proportions  Law of Multiple Proportions
Chemistry Matter
Understanding the laws of definite and multiple proportions.
law of definite proportions law of multiple proportions matter dalton's law compounds 
Probability of Multiple Events
Precalculus Topics in Discrete Math
How to find the probability of multiple events.
probability mutually exclusive inclusive overlap 
Probability of Multiple Events
Algebra 2 Combinatorics
How to find the probability of multiple events.
probability mutually exclusive inclusive overlap 
Selling Multiple Items
Algebra Word Problems Using Systems of Equations
How to set up a system of equations to represent word problems where someone is selling multiple items.
system of equations coefficient elimination 
Addition and Scalar Multiplication of Vectors
Precalculus Vectors and Parametric Equations
How to compute the sum of two vectors or the product of a scalar and a vector.
vector components horizontal component vertical component component form vector addition the zero vector scalar multiplication 
Multiplication and Division
PreAlgebra Integers
Learn how to multiply and divide positive and negative numbers.

Solving and Graphing Inequalities using Multiplication or Division
Algebra Solving and Graphing Inequalities
How to solve and graph one variable inequalities using multiplication or division.
inequality notation solve 
Multiplying Radicals of the Same Root
Algebra 2 Roots and Radicals
How to multiply radicals of the same root together.
radical multiplication root multiplication 
Multiplication and Division with Decimals
PreAlgebra Decimals and Percents
Multiplying and dividing decimals by ignoring and later replacing the decimal point

Percents
Algebra PreAlgebra
How to set up percent problems as proportions.
percent cross multiply proportion