Answer:
0.4
Step-by-step explanation:

Answer:
x=−y+4
Step-by-step explanation:
The answer is 5/1 because reciprocal means to flip a fraction.
First Divide: 21.75/ 30
You will get 0.725
Then, multiply 0.725 by 100%
Then your answer should be: 72.5%
Answer:
(-∞, -4] or [5, ∞)
Step-by-step explanation:
Because the solutions for x can also be equal to -4 and 5, brackets are used.
And because the solutions for x can be any number less than -4 or any number greater than 5, -∞ and ∞ are used respectively.