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that means to replace the variable with it's value, and then do all the mathematical symbols as normal (+-x/)

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14y ago

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When you replace the variable with a number and perform the operations you blank an expression?

When you replace the variable with a number and perform the operations, you evaluate an expression. This process involves substituting the numerical value for the variable and simplifying the expression according to the given operations. Evaluation is a fundamental concept in mathematics and is used to determine the value of the expression under specific conditions.


How do you do evaluate expression?

You have to substitute a value for the letter variable in the expression. This is what we call evaluating the algebraic expression. An example would be 3x+1=7, when x=2.


What does it mean to substitute a given value for each variable in an algeraic expression?

It means you replace each instance of the given variable with the given value. For instance, you have the following equation: A(A+2A)= B Then someone says to "substitute the value '4' for each instance of 'A'. You'd just replace them, and get: 4 ( 4 + 2(4)) = B


What is an algebraic expression by replacing each variable with a given number and performing all operations?

It is called evaluating the equation.


Evaluate the variable expression for x equals 3?

Take 3 and substitute into the expression given to you but not mentioned in the question here and evaluate the expression. "Sub and Solve" I say.


What operations could you perform on both sides of the given equation to solve it?

normally when people say "which of the following" there are actually choices following it below...


What is the given variable to -132x-3 12x-4?

in this given variable in this is x.


Solving for given variable?

What given?


What term is given to the variable that you are trying to measure in the experiment?

The term that is given to the variable being measured in an experiment is the dependent variable. This variable is the one that is observed and recorded based on the changes in the independent variable.


What is given to the variable we plot on the x-axis?

the independent variable


Is it true for a computer to perform operations it must be given a set of instructions that tells its exactly what to do?

yes because it doesn't have anything telling it not to


What is a subsitute given value for each variable in an algebraic expression?

Say you have an algebraic expression y = 3x +4 For a given value of x = 5 substitute that number in place of x in the expression, so in this case y = 3(5) + 4 = 19