Response:

Detailed explanation:
We are aware that

She made the trip between her residence and the airport twice.
Therefore,
Multiply the distance from her house to the airport by 4.

We are presented with the following polynomial: The initial step is to move the variables to one side of the equation. After doing this, we have: We complete the square by adding (b / 2) ^ 2 to both sides of the equation. After doing so, we obtain: Rewriting this gives us: Therefore, the solutions are: The solution set of the equation is:
Answer:
0.210; 0.790
Step-by-step explanation:
Given the following:
Correct completion rate by technicians = 21%
Minor error occurrence rate = 70%
Major error rate in chemical sample measurement = 9%
A.) The probability that a randomly chosen technician finishes preparation without any errors:
This corresponds to the technicians' correct completion rate:
P(correct completion) = 21% = 0.210
B.) The probability of completion with either a minor or major error:
P(completion with minor error) + P(completion with major error)
= 70% + 9%
= 0.70 + 0.09
= 0.790