A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mckenzieandjesus

  • one year ago

is tangent to circle O at B. What is the length of the radius r? Round to the nearest tenth. 13.0 3.6 7.0 9.9

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

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

    @jim_thompson5910

  3. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    pythagorean theorem a^2 + b^2 = c^2 r^2 + 5^2 = (8.6)^2 solve for r

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

    would i subtracts first?

  5. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I recommend finding 5^2 and (8.6)^2 first

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

    5^2+8.6^2= 98 24/25

  7. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what is 5^2 equal to

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

    the answer is 7.0 i did out the math work

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

    25

  10. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what is (8.6)^2 equal to

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

    73.96

  12. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    a^2 + b^2 = c^2 r^2 + 5^2 = (8.6)^2 r^2 + 25 = 73.96

  13. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    first isolate r^2 to do this, subtract 25 from both sides

  14. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    after that take the square root of both sides

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

    subtract from 73.96 and 8.6?

  16. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no 73.96 - 25

  17. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1435616590950:dw|

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

    73.96-25= 48 24/25

  19. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1435616618344:dw|

  20. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1435616640140:dw|

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

    oh oops ok

  22. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    73.96-25= ??? (put it in decimal form)

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

    48.96

  24. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1435616730666:dw|

  25. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    take the square root of both sides |dw:1435616754593:dw|

  26. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    we do this to cancel out the square over the r |dw:1435616777218:dw|

  27. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    r is never negative so we don't have to worry about plus/minus

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

    when i square root 48.96 its comes out as 6 sqrt 34/5

  29. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    write the decimal form

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

    its 15.87450...

  31. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no

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

    15.646085...

  33. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    use this calculator, it might be better http://web2.0calc.com/

  34. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    http://web2.0calc.com/#sqrt(48.96)

  35. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that's how you type in the expression hit the equal sign to have the calculator compute the result

  36. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    did you click on this link http://web2.0calc.com/#sqrt(48.96)

  37. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    click on it and hit the equal sign

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

    6.9971422738143606

  39. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

  40. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    that is the approximate value of r

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

    ok

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

    so 7.0?

  43. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yeah if you round to the nearest tenth

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

    ok thanku!

  45. jim_thompson5910
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np

  46. 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.