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toxicsugar22
 3 years ago
A school of tuna is making a 200 mile trip at an average air speed of 3 miles per hour in still water, but is swimming againist a current.
Express the tuna's travel time t, as a function of the current speed, v.
toxicsugar22
 3 years ago
A school of tuna is making a 200 mile trip at an average air speed of 3 miles per hour in still water, but is swimming againist a current. Express the tuna's travel time t, as a function of the current speed, v.

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3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0So, their actual speed is the "air speed" minus the current: s = 3v And the time it will take them to make the trip is the distance divided by their speed: t = 200/s t= 200/(3v)

toxicsugar22
 3 years ago
Best ResponseYou've already chosen the best response.0and write and solve an equation to find the current spees if the school make its trip in 8 hours.

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0For that, just take the final equation and solve it for v: t = 200/(3v) 3  v = 200/t v = 3  200/t and plug in 8 for t: v = 3  200/8 = 22 (the negative number just means that the current is working in their favor)

toxicsugar22
 3 years ago
Best ResponseYou've already chosen the best response.0so thats the answer

3pwood
 3 years ago
Best ResponseYou've already chosen the best response.0Should be right, assuming I didn't make a math error somewhere.
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