-3x-4= +12
X negative 3 and 4 then add +12 to it.
N-5 is greater than or equal to -28
Answer:
False your answer will 4x-16
Step-by-step explanation:
you have to distribute 4 to x and 4 to 4. so you will do 4*x=4x and 4*4=16. Now you still have the subtraction sign so your answer will be 4x-16.
Expressions are mathematical statements represented with the variables
The value of 12x^-3 y-1 for x=-1 and y=5 is - 12/5
<h3>How to determine the value of the variable</h3>
The expression is given as:
![12x^{-3} y^{-1}](https://tex.z-dn.net/?f=12x%5E%7B-3%7D%20y%5E%7B-1%7D)
When x = -1, the expression becomes
![12 * -1^{-3} y^{-1}](https://tex.z-dn.net/?f=12%20%2A%20-1%5E%7B-3%7D%20y%5E%7B-1%7D)
Evaluate the exponent
![- 12 y^{-1}](https://tex.z-dn.net/?f=-%2012%20y%5E%7B-1%7D)
When y = 5, the expression becomes
![- 12 * 5^{-1}](https://tex.z-dn.net/?f=-%2012%20%2A%205%5E%7B-1%7D)
Evaluate the exponent
- 12/5
Hence, the value of 12x^-3 y-1 for x=-1 and y=5 is - 12/5
Read more about expressions at:
brainly.com/question/723406