A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

HELP is anyone in connexus!!? geometry B and can help

  • This Question is Closed
  1. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i did that polygon similarity one you closed

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

    @DanJS thank you Dan mind helping me again

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

    sure

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I need to find the value of x and y but im confused as to how

    1 Attachment
  5. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    first thing i see is just to set up 2 pythagorean theorems, and solve for x and y

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

    maybe, might be too much work

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

    im just confused im not sure how to get it

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

    Triangle ABC and Triangle BDC are similar, they both have 3 of the same angles

  9. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    since both have a right angle and the same marked angle, so the third angle is the same

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

    so you can do ratios of the sides like last prob

  11. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ AB }{ BD } = \frac{ BC }{ AC } = \frac{ BC }{ DC }\]

  12. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\frac{ 5 }{ 3 } = \frac{ y }{ x+4 } = \frac{ y }{ x }\]

  13. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You can solve that for x and y

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    can you show me how to?

  15. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes kinda

  16. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Not gonna lie im a bit lost by that

  17. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry that is false, i messed up

  18. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh lol okay

  19. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, i just used two pythagorean theorems, and got x = 9/4 and y=15/4

  20. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Solving 5^2 + y^2 = (4+x)^2 and 3^2 + x^2 = y^2

  21. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did it on my calculator, no work

  22. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hmmm thank you dan :)

  23. DanJS
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    welcome

  24. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    In a right triangle, if an altitude is drawn to the hypotenuse, then all three triangles are similar. This is the situation with this problem. Start with triangle ABC. Since angle ABC is a right angle, triangle ABC is a right triangle. Segment BD is the altitude of triangle ABC drawn to the hypotenuse of triangle ABC. That means that triangles ABC, ADB, and BDC are similar triangles. Once you know the triangles are similar, then the lengths of corresponding sides are proportional, so you can write these two proportions: \(\dfrac{AB}{BC} = \dfrac{AD}{BD} \) and \(\dfrac{AD}{BD} = \dfrac{BD}{DC} \) Replacing all segments by their given lengths, x, and y, you get: \(\dfrac{5}{y} = \dfrac{4}{3} \) and \(\dfrac{4}{3} = \dfrac{3}{x} \) \(4y = 15\) \(4x = 9\) \(y = \dfrac{15}{4} = 3.75\) \(x = \dfrac{9}{4} = 2.25\)

  25. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.