Writing Linear Equations Multimedia Tutorial. Untitled. Inequalities. Solving Linear Equations. Math series Linear Equation: a mathematical expression that has an equal sign and linear expressions Variable:a number that you don't know, often represented by "x" or "y" but any letter will do!
Variable(s) in linear expressions Cannot have exponents (or powers) For example, x squared or x2 Cannot multiply or divide each other For example: "x" times "y" or xy; "x" divided by "y" or x/y Cannot be found under a root sign or square root sign (sqrt) For example: √x or the "square root x"; sqrt (x) Linear Expression: a mathematical statement that performs functions of addition, subtraction, multiplication, and division These are examples of linear expressions: These are not linear expressions: Solve these linear equations by clicking and dragging a number to the "other" side of the equal sign.
More examples: Linear equation, solving example #1: Find x if: 2x + 4 = 10 Linear equation, solving example #2: Find x if: 3x - 4 = -10(using negatives) Linear equation, solving example #3: Math series. Algebra I Recipe: Compound Inequalities. Calculation-Equation-Contribution Margin Method-Advantages-Limitations-Assumptions-Calculator-Example.
Learning Objectives: Define and explain break even point equation.How break even point is calculated by formula? What are its advantages, assumptions, and limitations? Definition of Break Even point: Break even point is the level of sales at which profit is zero. According to this definition, at break even point sales are equal to fixed cost plus variable cost. [Break even sales = fixed cost + variable cost] The break even point can be calculated using either the equation method or contribution margin method. Equation Method: The equation method centers on the contribution approach to the income statement. Profit = (Sales − Variable expenses) − Fixed expenses Rearranging this equation slightly yields the following equation, which is widely used in cost volume profit (CVP) analysis: Sales = Variable expenses + Fixed expenses + Profit According to the definition of break even point, break even point is the level of sales where profits are zero.
Simple Polynomial Multiplication. Simple Polynomial Multiplication (page 1 of 3) Sections: Simple multiplication, "FOIL" (and a warning), General multiplication There were two formats for adding and subtracting polynomials: "horizontal" and "vertical".
You can use those same two formats for multiplying polynomials. The very simplest case for polynomial multiplication is the product of two one-term polynomials. For instance: Simplify (5x2)(–2x3) I've already done this type of multiplication when I was first learning about exponents, negative numbers, and variables. . (5x2)(–2x3) = –10x5 The next step up in complexity is a one-term polynomial times a multi-term polynomial. Simplify –3x(4x2 – x + 10) To do this, I have to distribute the –3x through the parentheses: –3x(4x2 – x + 10) = –3x(4x2) – 3x(–x) – 3x(10) = –12x3 + 3x2 – 30x The next step up is a two-term polynomial times a two-term polynomial.
Simplify (x + 3)(x + 2) Math is Fun - Homework Help.