<h2>Answer = </h2><h2>

</h2>
Step-by-step explanation:
Greetings !
simplify for variable y first
apply exponent rule

Add/subtract the numbers -8+3=5

Apply exponent rule

Thus,

secondly, simplify for the variable x
Apply exponent rule as we made on y


multiply bot the values we get
Hope it helps!
Answer:
B.18
Step-by-step explanation:
2+1+3
3+3=6
6+5=11
11+7=18
The statement is false, as the system can have no solutions or infinite solutions.
<h3>
Is the statement true or false?</h3>
The statement says that a system of linear equations with 3 variables and 3 equations has one solution.
If the variables are x, y, and z, then the system can be written as:

Now, the statement is clearly false. Suppose that we have:

Then we have 3 parallel equations. Parallel equations never do intercept, then this system has no solutions.
Then there are systems of 3 variables with 3 equations where there are no solutions, so the statement is false.
If you want to learn more about systems of equations:
brainly.com/question/13729904
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Answer:
The study is an observational study.
Step-by-step explanation:
Observational study: In research methods, the term "observational study" is determined as one of the different studies that are being conducted by the researchers to observe or study the effects of a specific risk factor, treatment, diagnostic test, or some other intervention in the absence of an effort to change which participants are being exposed and which is not being exposed to it.
Types: Cohort study and case-control study.
In the question above, the given statement represents the observational study.
Answer:
36x - 108 kilometers²
Step-by-step explanation:
Area = length x width
36 ( x - 3 ) =
36x - 108
-Chetan K