Here is the equation:

Since both decimals are negative, the answer will be positive.
- Negative times Negative = Positive
Divide both sides by -3.9 to leave the variable alone:

r is equal to 4 → r = 4
Answer: Isolate the variable by dividing each side by factors that don't contain the variable.
x= -7, -9
Using proportions, it is found that the ordered pair that represents the location of the layover is (3.75, 1.5).
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
The flight distance is partitioned in a ratio of 3:1, hence, for both the x and y coordinates, we have that:
L - Nv = 3/4(Ny - Nv)
For the x-coordinate, we have that:



x = 3.75
For the y-coordinate, we have that:


y = 1.5.
The ordered pair that represents the location of the layover is (3.75, 1.5).
More can be learned about proportions at brainly.com/question/24372153
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Both are not earning different salaries.
If a study determines the difference in average salary for subpopulations of mechanical engineers and civil engineers is NOT significant, then the subpopulations of mechanical and civil engineers are not earning different salaries.
Study determines that there is not any significant study so thats why both are not earning.
Learn more about average median on:
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