Does this system of equations have one solution, no solutions, or an infinite number of solutions?
1 answer:
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Answer:
Step-by-step explanation:
To know the hours of flight, subtract the departure time from the arrival time
so
Remember that Chicago and Dallas are in the same time zone
Answer:
- strong negative linear correlation
- -0.986
Step-by-step explanation:
You need to notice that when altitude goes up, temperature goes down. That means the correlation is negative.
The table shows the temperature decrease to be monotonic (nowhere does it go up when altitude increases), so the correlation is strong.
The strong negative correlation number available to you is -0.986.
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If you want confirmation, you can put the numbers into your favorite graphing calculator and tell it to compute the correlation for you.
