Problem 23 Determine if each is an expressi... [FREE SOLUTION]

91影视

Prealgebra

Lynn Marecek, MaryAnne Anthony-Smith

$Math Studyset 91影视 Explanations$ Math

2016 Edition

Chapter 2: Problem 23

Determine if each is an expression or an equation. $9 \cdot 6=54$

Short Answer

Expert verified

Equation

Step by step solution

Identify the presence of an equals sign

Look at the given mathematical sentence: $9 \cdot 6 = 54$. Notice if there is an equals sign ($=$).

Determine if it's an equation or expression

Since there is an equals sign, the mathematical sentence is comparing two quantities and states that they are equal. This means it is an equation.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Identifying Equations

In mathematics, it's important to be able to tell if a mathematical statement is an equation.
One clear indicator is the presence of an equals sign ( = ).
For example, in the exercise, we have 9 * 6 = 54 .
Here, you can see the equals sign right in the middle.
Because of that, we know it's an equation.
Equations state that two things are the same.
It's like saying what鈥檚 on one side of the equals sign is exactly equal to what's on the other side.
Remember, whenever you see an equals sign, it's an equation.

Expressions vs Equations

Understanding the difference between expressions and equations is key in math.
An equation always has an equals sign ( = ), showing that two quantities are equal.
Examples of equations include 2 + 3 = 5 and x - 1 = 4 .

On the other hand, expressions don't have an equals sign.
They're like mathematical phrases that represent a value or relationship.
Examples of expressions would be x + 7 or 3 * y .
You can't tell if these are equal to something unless you solve them or have more information.
So, if you see a statement without an equals sign, you're looking at an expression.

Math Notation

Math notation can sometimes be tricky, but it's just a way of writing math in a clear, concise manner.
Some important notations to know include:

= : Equals sign, shows that two things are equal.
* : Multiplication sign, shows that you multiply numbers.
- : Minus sign, used for subtraction.
+ : Plus sign, used for addition.

These symbols help us to write math sentences that everyone can understand.
In the exercise, when we see 9 * 6 = 54 , the notation is telling us to multiply 9 by 6, which equals 54.
Getting comfortable with these symbols will make math much easier to handle.

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91影视

Determine if each is an expression or an equation. \(9 \cdot 6=54\)

Short Answer

Step by step solution

Identify the presence of an equals sign

Determine if it's an equation or expression

Key Concepts

Identifying Equations

Expressions vs Equations

Math Notation

One App. One Place for Learning.

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