Answer:
Factoring a perfect square trinomial.
Step-by-step explanation:
The left side was able to be simplified via factoring.
1:100 could be an example of a ratio comparing to 100
Answer:
yes it is
Step-by-step explanation:

It can be changed after experimenting and testing to see if something else is better than the current. :-]
Answer:
543.24
Step-by-step explanation:
Expanded Notation Form:
500
+ 40
+ 3
+ 0.2
+ 0.04
Expanded Factors Form:
5 × 100
+ 4 × 10
+ 3 × 1
+ 2 × 0.1
+ 4 × 0.01
Expanded Exponential Form:
5 × 102
+ 4 × 101
+ 3 × 100
+ 2 × 10-1
+ 4 × 10-2
Word Form:
five hundred forty-three and twenty-four hundredths