Irrational
We know that pi is irrational (we can’t express it as a ratio of two numbers), and we are multiplying it by a rational number (-2). However -2 lots of something with infinite digits, will still have infinite digits, therefore it is irrational.
Answer:
The first one, third one, fourth one, and sixth one.
Step-by-step explanation:
I hope this helps!
"fifty thousand six hundred and seventy nine" and 50,000 + 600 + 70 + 9
Answer: 
Step-by-step explanation:
The given equation : 
Using logarithmic property : 
The given equation will be equivalent to 

Subtract 7 from both sides , we get

Divide both sides by 3 , we get

Hence, the solution is 