1. Which is an example of an algebraic expression?

A. 4(3 + 8)
B. 182
C. 3 – a
D. 21 • 4

2. Which is an algebraic expression for "5 more than z"?

A. 5z
B. z + 5
C. 5z + 5
D. 5 – z

3. Which word phrase can be used to represent the algebraic expression 4(21 + n)?

A. 4 plus the sum of 21 and a number n
B. 4 times the product of 21 and a number n
C. 4 times the sum of 21 and a number n
D. 4 less than the sum of 21 and a number n

An algebraic expression is a mathematical phrase that uses letters, numbers, and mathematical operations. It can represent a value or a relationship between values. Examples of algebraic expressions and how they can be represented in word phrases are provided in this answer. ;

Answered by NetaLeeHershlag | 2024-06-18

The answers are -->
1.) 3 -a. An algebraic expression needs have a variable in it. In this case the variable is "a". So the answer is --> 3-a
2.) z+5. 5 more that z means 5 added to z. So, the answer is --> z+5
3.) 4 times the sum of 21 and a number n. In an algebraic expression, the brackets takes the highest order of preference. So, the answer is --> 4 times the sum of 21 and a number n

Answered by utsavsingh | 2024-06-24

The answers are: 1) C. 3 - a is an algebraic expression. 2) B. z + 5 represents 5 more than z. 3) C. 4 times the sum of 21 and a number n describes the algebraic expression 4(21 + n).
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Answered by utsavsingh | 2025-01-02