[DOC] [TLE] The Language of Algebra - Definitions - In Depth - Math.com [PAR] In algebra, we often use letters to represent numbers. ... their value never 
changes, since there are no variables in the term that can change its value. ... 
This irrational number is so important that we give it a name and a special symbol
! ... or "the number" tell us our expression has an unknown quantity, called a 
variable. [DOC] [TLE] Algebraic /Variable expression - A group of numbers , symbols, and ... [PAR] Terms are separated by operation signs. 5x + 4 + y 5x, 4, y are terms. Variable - A 
quantity that changes or can have different values. A symbol, usually a letter,... [DOC] [TLE] Variable (mathematics) - Wikipedia [PAR] In elementary mathematics, a variable is an alphabetic character representing a 
number, called the value of the variable, which is either arbitrary or not fully 
specified or unknown. Making algebraic computations with variables as if they 
were explicit .... An indeterminate is a symbol, commonly called variable, that 
appears in a... [DOC] [TLE] Algebraic expressions - A complete course in algebra - The Math Page [PAR] The numbers are the numerical symbols, while the letters are called literal 
symbols. Question 1. ... However, we often omit the multiplication dot and simply 
write ab. Read "a, b. ..... Problem 9. Write an algebraic expression that will 
symbolize each of the following. ... A formula is an algebraic rule for evaluating 
some quantity. [DOC] [TLE] Glossary of Mathematical Terms - The Story of Mathematics [PAR] algebra: a branch of mathematics that uses symbols or letters to represent 
variables ... arithmetic: the part of mathematics that studies quantity, especially as 
the result of ... (the more advanced manipulation of numbers is usually known as 
number theory) ... derivatives and integrals, used to study motion and changing 
values. [DOC] [TLE] Basic Algebra Terms - Terms, Expressions & Quadratic Equations ... [PAR] Variable: Unknown quantities, usually represented by English letters. ... that is not 
fixed and can change depending upon the usage, is known as the variable. [DOC] [TLE] Algebra Vocabulary [PAR] The number (0), that is, adding 0 does not change a number's vale (e.g., 5 + 0 ... 
A mathematical sequence in which two expressions are connected by an equality 
symbol. ... Decimal numbers smaller than 1 are sometimes called decimal 
fractions ... An algebraic equation in which the variable quantify or quantities are 
in the... [DOC] [TLE] Variable Expressions ( Read ) | Algebra | CK-12 Foundation [PAR] Aug 16, 2016 ... A noun is usually described as a person, place, or thing. In mathematics, nouns 
are called numbers and variables. A variable is a symbol, usually an English 
letter, written to replace an unknown or changing quantity. [DOC] [TLE] Why all the letters in algebra? | Overview and history of algebra ... [PAR] Dec 28, 2012 - 3 minJesse Roe and Sal Khan talk about why we use letters in algebra. ... Since x was  commonly ... [DOC] [TLE] Variables, Functions and Equations [PAR] These concepts or items ar represented by what are called variables. ... Thus a 
variable can be considered as a quantity which assumes a variety of values in a 
... Mathematics usually uses letters from the end of the alphabet to represent 
variables. ... A monomial is an algebraic expression that is either a numeral, a 
variable,... [DOC] [TLE] Algebra Glossary - MathChamber [PAR] Algebraic Expression, an expression consisting of one or more numbers and ... In 
a multiplication expression, the quantities being multiplied are called factors. .... 
Rise, The vertical (up and down) change in a line graphed in the coordinate 
plane. .... Variable, a symbol, typically a lower case letter, that is used to 
represent an... [DOC] [TLE] Changing Quantities Math 120 Calculus I - Clark University [PAR] When you first started using the symbol x in algebra, it was an unknown. There 
weren't ... letters for our variables, we'll let y be the variable that depends on the 
value

Question: Usually symbolized by a letter, a changing quantity in algebra is called this
Answer: a variable