It’s 9! 9 is the square root of 18
Answer:
1) 11
2)275
3)11
Step-by-step explanation:
0.20 x 55= 11
55 x 5=275
0.2*55=11
So :

?
First, you want to bring everything together on the top of the fraction.
12=24/2 so you can have

Add like terms -- 12 +24 = 36

Now we are at

Which is the lowest possible simplified version while remaining at exact value.
Feel free to check my math! I kinda did this off the top of my head.
This is quite easy, but anyway:
In order, they are
3, 4, 4, 5, 5, 5, 5, 7, 7
7 - 3 = 4
4 would be the range