Table of Contents
- 1 What is an algebraic expression for seven less than a number?
- 2 What is the algebraic expression for 12 less than a number?
- 3 Which of the following is the correct algebraic expression of twelve less than the product of three and a number?
- 4 What is less than twice in math?
- 5 Which is an example of a step by step algebraic expression?
- 6 How to write an algebraic expression for a quantity?
What is an algebraic expression for seven less than a number?
Example 3: Write each phrase as an algebraic expression using the variable n….Algebraic Expressions With Example Problems and Interactive Exercises.
| Phrase | Expression |
|---|---|
| nine increased by a number x | 9 + x |
| fourteen decreased by a number p | 14 – p |
| seven less than a number t | t – 7 |
| the product of 9 and a number n | 9 · n or 9n |
What is the algebraic expression for 12 less than a number?
Explanation: 12 less than a number means to subtract 12 from that number. So, 12 less than 20 is 8 , because is 20−12 , 12 less than 12 is 0 , because it’s 12−12 , and so on. But since you don’t know which number you need to subtract from, it’s a variable, and you can call it as you like, usually x .
How do you solve the equation 6r 7 13 7r?
1 Expert Answer 6r + 7 = 13 + 7r Subtract 6r from both sides. This will remove all of the r-terms from the left side.
Which of the following is the correct algebraic expression of twelve less than the product of three and a number?
The phrase less than suggests subtraction, and the word product suggests multiplication. So, the verbal expression twelve less than the product of three and a number can be written as the algebraic expression 3n – 12.
What is less than twice in math?
“Less than” means subtraction, whereas “more than” means addition. Saying “twice a number” means that you are multiplying that number by 2.
How to write 7 less than 4 times a number?
Sometimes it helps to rephrase the word problem in the opposite order. 7 less than 4 times a number is the same as: a number times 4, less 7. 11 more than half a number is the same as: half a number and 11 more. Can you now write 5 more than the product of a number and 3, which is the same as the product of a number and 3 and 5 more?
Which is an example of a step by step algebraic expression?
Step-by-Step Examples. Example 1: The sum of twice a number and 3 Answer: Let variable x be the unknown number. So twice a number means 2x. The sum (use plus +) of twice a number and 3 should be written as 2x + 3. Example 2: The difference of triple a number and 5 Answer: Let variable y be the unknown number. So triple a number means 3y.
How to write an algebraic expression for a quantity?
How to write algebraic expressions when one quantity is more or less than another? 1. Juan is 6 inches taller than Niko. If we let N represent Niko’s height in inches, write an algebraic expression for Juan’s height. 2. Linda and Joan went shopping. Linda spent $25 less than Joan.
Is the expression 9 + x an arithmetic or numerical expression?
This expression is a numerical expression, (also called an arithmetic expression). The expression 9 + x represents a value that can change. If x is 2, then the expression 9 + x has a value of 11. If x is 6, then the expression has a value of 15. So 9 + x is an algebraic expression.