Good night,
<span>Irrational numbers
are those that can't be expressed as a fraction:
12.89 can be expressed as: </span>


<span>The above numbers
can be expressed as a fraction, then the logical answer is: </span>

But we will check the answer:

As you can see we can't express that number as a fraction, so that is te correct answer.
12. If this isn't right, please tell me and I will fix it.
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
he got an 80 so if that was his grade by answering 20 questions right then the correct answer would be 25 questions
Answer:
75cm^2
Step-by-step explanation:
Check attachment
Answer:
x = 6
Step-by-step explanation:
we can multiply the entire equation by 3 to simplify the numbers
-2x + 27 = 4x - 9
27 = 6x - 9
36 = 6x
x = 6