Answer:
11.82
Step-by-step explanation: I know this because 21.32-9.50= 11.82
easy
5% is .05 two decimals to the left
55 x .05 = 2.75
$2.75 is your sales tax
55+2.75=$57.75
If you use the same technique from the first question, you can do:
5x+2=3x+42
2x=40
x=20
For the rest of the questions, please use the same technique if they are vertical because I can't solve all of the questions for you sorry.
Answer:
The greatest common factor of the given expressions is
Step-by-step explanation:
Given that 
can be written as
can be written as
and 
can be written as
Comparing the common factors we have 
is the greatest common factor of
Therefore the greatest common factor of the given expressions is
Answer:
The reviewers can determine the experiment's feasibility.
Step-by-step explanation:
First of all this isn't math but the answer is between A & B, typically it is checked for mistakes that could lead to it being flawed. From this It is most likely A due to it being a paper and not an actual experiment, they would be looking for if it COULD happen, not if it WILL happen. They wouldn't add their own findings to someone elses paper, and it typically isn't for funding.
