The points (-1, 5) and (7, r) lie on a line with slope 5/4 Find the missing coordinate r.
1 answer:
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Answer:
19.05 knots average per hour
Step-by-step explanation:
Distance traveled = 200 nautical miles
Time taken = hours =
hours
To find:
How many knots did the ship average each hour ?
Solution:
Here, we are given the distance traveled and total time taken to travel the distance.
As per question statement, we have to find the average speed of the ship.
Formula for average speed is given as:
Putting the values in the formula:
It is also given that 1 nautical mile per hours is equal to one know.
Therefore, the average speed can be written as:
19.05 knots average per hour