complex numbers   81 videos

• Probability

Pre-AlgebraIntroductory Statistics

Probability is number of successes out of number of possible outcomes

• The Discriminant

AlgebraQuadratic Equations and Functions

How to calculate and interpret the discriminant of a quadratic equation.

discriminant x intercepts number of solutions
• Definitions and Applications of Absolute Value

AlgebraAbsolute Value

What is absolute value?

absolute value number line distance
• Significant Figures

PhysicsIntroduction to Physics

How to find the correct number of figures to show when writing numbers.

significant figures digits rounding
• Adding and Subtracting

Pre-AlgebraWhole Numbers

Using the number line to represent adding and subtracting whole numbers

• Significant Figures

ChemistryIntroduction to Chemistry

How to find the correct number of figures to show when writing numbers.

significant figures digits rounding

• Permutations

PrecalculusTopics in Discrete Math

How to find the number of permutations of a set.

different arrangement permutation factorial permute
• Combinations

PrecalculusTopics in Discrete Math

How to find the number of combinations of a set.

chose choosing combination order doesn't matter pens
• Cube Roots

AlgebraRadical Expressions and Equations

How to find the cube root of a number.

cube root
• Defining Variables

AlgebraPre-Algebra

How to write variables to describe numbers.

variable
• Permutations

Algebra 2Combinatorics

How to find the number of permutations of a set.

different arrangement permutation factorial permute
• Combinations

Algebra 2Combinatorics

How to find the number of combinations of a set.

chose choosing combination order doesn't matter pens
• Complicated Indefinite Integrals

CalculusAntiderivatives and Differential Equations

How to solve complex indefinite integral using the properties of indefinite integrals.

indefinite integral antiderivative antidifferentiation differentiation
• Pronoun Antecedent Agreement

GrammarSentence Basics

The rules for pronoun and antecedent agreement.

pronoun antecedent agreement person number gender
• Mean

AlgebraIntroduction to Statistics

How to calculate the mean, or average, of a list of numbers.

mean measure of center average
• Addition and Subtraction

Pre-AlgebraIntegers

Understanding the set of integers in contrast to the whole or natural numbers

• Multiplication and Division

Pre-AlgebraIntegers

Learn how to multiply and divide positive and negative numbers.

• Divisibility

Pre-AlgebraPrime Numbers

Shortcuts to determine whether a number is a factor of another

• Prime Factorization

Pre-AlgebraPrime Numbers

Identifying prime numbers and finding prime factorizations