Mathematical Formulas and Equation with word problems

1.2 and 1.3 Review

Mathematical Modeling

Process of translating phrases or sentences into expressions and equations.

Step 1 of Mathematical Modeling

Verbal Description

Step 2 of Mathematical Modeling

Verbal Model

Step 3 of Mathematical Modeling

Assign Labels

Step 4 of Mathematical Modeling

Algebraic Equation

“The Quotent of 20 and 5“

20/5

Percent Raise

Raise=Precent x Old wage

Percent of Anual Income

Expenses= Percent x Income

Estimating travel Time

Distance = rate x time

Estimating the height of A

Height of A / Height of A shadow x Height of B / Height of B shadow

Simple Interest Problem

Interest from A + Interest from B = Total interest

An inventory Problem

Profit from A + Profit from B=Total Profit

Literal Equations

Equation with +1 variable

Square Area

A=s²

Square Perimeter

4s

Rectangle Area

A=LW

Rectangle Perimeter

2L+ 2W

Circle Area

A=pr²

Circle Circumfence

2pr

Triangle Area

A=1/2BH

Triangle Perimeter

P= a+b+c

Cube

V=s³

Rectangle Solid Volume

V=lwh

Circular Cylinder volume

V=pi r² h

Sphere Volume

V=4/3 pi r³

Simple Interest

L=prt

Principal

Original Deposit

Compounding

Number of times where interest is calculated.

Distance formula

d=rt