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?
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 would you write 7 less than 2 times a number?
1 Answer
- Let “a number” be represented by n.
- “twice a number” →2n.
- “twice a number and k” →2n+k.
- “7 less than twice a number and k” →(2h+k)−7.
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 the algebraic meaning of the phrase less than?
Less than is one of the terms used to show the relationship between two values. It states that one value is lesser than the other. The sign for less than is < and with this metric, we can compare numbers, weights, heights, and values.
What does 7 less than mean in algebraic expression?
The “7 less than” means “minus 7” to whatever quantity being described which in this case “the product of a number and 6”. Here’s the final interpretation of the math phrase in an algebraic expression: 6k-7 6k − 7 Example 4: Write an algebraic expression for the math phrase ” the average of a number and 4″.
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.
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.
Which is an algebraic expression for the number 5m?
Selecting the letter m as our variable, the algebraic expression for this math phrase is simply 5m. It means 5 times the unknown number m. 5m 5m. Example 6: Write an algebraic expression for the math phrase ” twice a number”.