Step-by-step explanation:
as we can see that the sides are in the ratio of 2:1 and are consecutive
so
a;b=2:1
a=4
b=8
Answer:
Samantha percent error was 18%.
Step-by-step explanation:
The answer is: 
The explanation is shown below:
1- You have the following expression given in the exercise:

2- When you multiply signs, you obtain:

3. Now, you must add like terms, as following:

4. Therefore, you have that the expression simplified is:

Answer:0.07% because 710-654 is 56 and 56 divided by 710 is 0.07