Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

toxicsugar22 Group Title

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.

  • 3 years ago
  • 3 years ago

  • This Question is Closed
  1. 3pwood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So, their actual speed is the "air speed" minus the current: s = 3-v And the time it will take them to make the trip is the distance divided by their speed: t = 200/s t= 200/(3-v)

    • 3 years ago
  2. toxicsugar22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    and write and solve an equation to find the current spees if the school make its trip in 8 hours.

    • 3 years ago
  3. 3pwood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    For that, just take the final equation and solve it for v: t = 200/(3-v) 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)

    • 3 years ago
  4. toxicsugar22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so thats the answer

    • 3 years ago
  5. toxicsugar22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    -22

    • 3 years ago
  6. toxicsugar22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    is this right

    • 3 years ago
  7. toxicsugar22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    can u help

    • 3 years ago
  8. 3pwood Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Should be right, assuming I didn't make a math error somewhere.

    • 3 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.