Answer:
A. add 81; 
Step-by-step explanation:
The perfect square formula
Rewrite expression 
as follows:
So, to form a perfect square, 
is missed.
When we add 
we will get
First we need to convert cm to mm
45 cm = 450 mm
Now our ratio looks like this
60/450
We can divide both by 30 and once we do that our ratio will look like this:
2/15
That means the answer is B
Answer: What is the distance from 0 on a number line called?
The distance between a number's place on the number line and 0 is called the number's [absolute value]. To write the absolute value of a number, use short vertical lines (|) on either side of the number.
Step-by-step explanation:
Here's a hint. I hope this helps.
10 more than 451 would be 451 + 10 = 461.
