Answer:
The visitor should run 13 km due west from the tent
Step-by-step explanation:
Here we have;
Location of island = 3 km North of point on shoreline
Location of tent = 13 km East of point on shoreline
Running speed of visitor = 8 km/h
Swimming speed = 1 km/h
Distance of island from tent = 
Since, time = distance/speed, it will take 13.34/1 hours or 13.34 hours to swim directly to the island.
However if the visitor first runs to the closest point on the shoreline to the island, then swims across to the island, it will take;
13/8 Hr + 3/1 hr = 37/8 hours or 4.625 hours only.
Therefore, to minimize the time it takes to reach the island, the visitor has to run 13 km west of the tent to first get to the closest point of the shoreline to the island before swimming across to the island.
Step-by-step explanation:
hope it's helpful.........
I would say c, 600 inches. Because I subtracted 621-28 and got about 600. Because they are looking for the value of what was left for the 19 Years. And you could then fully eliminate D because it can’t be more that 621 because that’s how much rainfall they got in 20 years. And so since you know that one of the years is 28 inches of rainfall, you could then subtract to get how many inches of rainfall for the rest of the 19 years
One half n minus three equals five. 1/2n - 3 = 5. N = 16. 1/2(16) - 3 = 5. 8 - 3 = 5.