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

alainabbyboo22 Group Title

can someone help me please ? If AD = 8 cm and AC = 24.5 cm, calculate the length of AB. A. 16 cm B. 15 cm C. 30.63 cm D. 14 cm

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    • 2 years ago
  2. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    do you know this ?

    • 2 years ago
  3. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    hint: use theorem 3 on this page http://www.regentsprep.org/Regents/math/geometry/GP14/CircleSegments.htm

    • 2 years ago
  4. waterineyes Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Liked it..

    • 2 years ago
  5. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    i just still don't get this .

    • 2 years ago
  6. waterineyes Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Theorem says : \[tangent^2 = Secant \cdot Chord\]

    • 2 years ago
  7. waterineyes Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I.e : \[AB^2 = AD \cdot AC\] Just plug in the values..

    • 2 years ago
  8. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    according to theorem 3 on that page b*c = a^2 In this context, if AB = x, AD = 8 and AC = 24.5, then (AD)*(AC) = (AB)^2 8*24.5 = x^2 Keep going to solve for x

    • 2 years ago
  9. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    38416 . that is what i got cause i did 8*24.5 which equals 196 , then 196^2 and that gives me 38416 .

    • 2 years ago
  10. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    you take the square root of 196

    • 2 years ago
  11. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    this will give you a smaller number (than 196)

    • 2 years ago
  12. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    14 !!

    • 2 years ago
  13. alainabbyboo22 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks for helping me out on this (: i was lost !

    • 2 years ago
  14. jim_thompson5910 Group Title
    Best Response
    You've already chosen the best response.
    Medals 2

    yw

    • 2 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.