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What is the definition for variable?

the def for variable is a letter or symbol used to represent a missing number in an algebrac expression


What is the variable expression to represent the number of pounds in y ounces?

16x


What algebraic expression for the number of muffins that are left what quantity do you need to represent with a variable?

X+6. Variable (x)


What does the variable represent in an addition or subtraction expression?

it is the number you would use to solve the problem


Write the phrase as a variable expression. Use x to represent "a number."The sum of a number and 138?

x + 138


How do you write a variable expression for the number of inches in x feet?

Number of inches in 1 foot= 12 so, number of inches in x feet= 12*x


What do you call replacing a variable in an expression by a number?

A variable is a letter that represents a number. An expression that contains at least one variable is called variable expression, also called algebraic expression. A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables. For example,3(x^2)y + 2xy + x - 7 is a variable expression, where you have 4 terms.When working with variable expression, you often use the substitution principle:If a = b, then a may be replaced by b in any expression.The set of numbers that a variable may be represent is called replacement set, or domain, of the variable. To evaluate a variable expression, you replace each variable with one of its values and simplify the numerical expression that results.Example: Evaluate the expression 2x - 4y for x = 5 and y = -9.Solution:2x - 4y= 2(5) - 4(-9)= 10 + 36=46


What is an expression that contains a variable a number and at least one operation?

That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.


What is a number that is multiplied by a variable in an expression?

The number is called the coefficient of the variable


What is the algebraic expression twice a number z?

The algebraic expression "twice a number z" can be represented as 2z. In this expression, the variable z represents the unknown number, and multiplying it by 2 gives you twice that number. This expression can be used in algebraic equations and formulas to represent scenarios where a number needs to be doubled.


What does a variable represent in math?

any number at all


What is the number that multiplies a variable?

The number that multiplies a variable in an algebraic expression is called a coefficient. It is the numerical factor that is multiplied by the variable to form a term in the expression.