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

Rebecca*

Can someone please explaine ratios and solving proportions? Thanksss(:

  • one year ago
  • one year ago

  • This Question is Closed
  1. Rudy
    Best Response
    You've already chosen the best response.
    Medals 2

    Ratios and proportions are fractions. Remember equivalent fractions? 1/2 =2/4=5/10=14/28 Well ratios are fractions, and since they're usually maintained, you can compare different values as long as you keep the same ratio. Do you have a specific problem to look at?

    • one year ago
  2. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    um, 18/20 K/110... it says to use cross products! What is that?

    • one year ago
  3. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    @Rudy

    • one year ago
  4. Rudy
    Best Response
    You've already chosen the best response.
    Medals 2

    So your ratio is 18/20 and since a ratio is maintained, you can say that it equals k/110 so: \[\frac{18}{20}=\frac{k}{110}\] Which you can solve as any equation. To isolate k, multiply times 110 on both sides. \[\frac{18*110}{20}=\frac{k*110}{110}\] \[\frac{18*110}{20}=k\]

    • one year ago
  5. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    there are others but i woll try my best on them! I just dont under stand this one!

    • one year ago
  6. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    *Will

    • one year ago
  7. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    so its 1,800?

    • one year ago
  8. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    haha, thats way off!

    • one year ago
  9. Rudy
    Best Response
    You've already chosen the best response.
    Medals 2

    Just remember a ratio is maintained. So you can equate the ratios given, no matter the change in the amount... Like unit prices. If someone says a quart of oil is 3.25 how many can you buy with 22.75 Well the fraction is: \[\frac{quarts of oil}{price}=\frac{1}{3.25}=\frac{x - quarts}{22.75}\] Hope that helps. Let me know if you have any you're stuck on, I may take time to answer, but I will.

    • one year ago
  10. Rebecca*
    Best Response
    You've already chosen the best response.
    Medals 0

    oh!! So thats the cross thing? Not that hard, thank you so much!! All of them are alike!! haha, thanks so much!!|dw:1355342436738:dw|

    • one year ago
  11. Rudy
    Best Response
    You've already chosen the best response.
    Medals 2

    you're welcome.

    • one year 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.