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Emily778

  • 2 years ago

Find the value of x.

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  1. Emily778
    • 2 years ago
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  2. charlieberzak
    • 2 years ago
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    :P :P :P

  3. Emily778
    • 2 years ago
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    Not the greatest picture in the world.

  4. charlieberzak
    • 2 years ago
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    not hd, huh

  5. Emily778
    • 2 years ago
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    What do you think it is?

  6. charlieberzak
    • 2 years ago
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    but it looks cool, white crystals, me and my uncle went crystal picking and we also found some cool ones... but mine were purple

  7. charlieberzak
    • 2 years ago
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    i have not idea, a crystal lol

  8. Emily778
    • 2 years ago
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    they're a pale pink, actually.

  9. Fazeelayaz
    • 2 years ago
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    rock

  10. Kapt_Crazy
    • 2 years ago
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    ok emily this is another simple one. x is the radius of the circle right.

  11. Emily778
    • 2 years ago
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    yep

  12. Emily778
    • 2 years ago
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    what do I do?

  13. Kapt_Crazy
    • 2 years ago
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    is the 12 the length of the whole line or just up the the point where the line of 9 meets it

  14. Emily778
    • 2 years ago
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    I think it's just where the 9 meets

  15. Kapt_Crazy
    • 2 years ago
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    |dw:1369728122034:dw|

  16. Kapt_Crazy
    • 2 years ago
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    u see the kind of dotted line right. that makes ur triangle and the raduis. so the ans for the dotted line is = x

  17. Kapt_Crazy
    • 2 years ago
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    do u understand

  18. Emily778
    • 2 years ago
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    yes

  19. Kapt_Crazy
    • 2 years ago
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    so what ans did u get

  20. Emily778
    • 2 years ago
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    15.

  21. Kapt_Crazy
    • 2 years ago
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    yeah u right

  22. Emily778
    • 2 years ago
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    ok :) thanks.

  23. Emily778
    • 2 years ago
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    What about this one?

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  24. Emily778
    • 2 years ago
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    @Kapt_Crazy

  25. qweqwe123123123123111
    • 2 years ago
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    The answer to the first problem is not 15.

  26. Emily778
    • 2 years ago
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    i think it's 40.

  27. Kapt_Crazy
    • 2 years ago
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    do u need to calculate the angle

  28. Emily778
    • 2 years ago
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    prove it.

  29. charlieberzak
    • 2 years ago
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    lol what a challenge

  30. qweqwe123123123123111
    • 2 years ago
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    It's an easy one, actually. Since the "9" line is right to the "12" line, you know that it also bisects the "12". Which means that you have a right triangle with a long leg of 9, a short leg of 6, and the hypotenuse of that triangle would be the radius of the circle - which also just happens to be what "x" is.

  31. Kapt_Crazy
    • 2 years ago
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    those angles well be equal because

  32. Emily778
    • 2 years ago
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    so it's 12?

  33. Kapt_Crazy
    • 2 years ago
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    |dw:1369728687803:dw|

  34. qweqwe123123123123111
    • 2 years ago
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    |dw:1369728693846:dw|

  35. Kapt_Crazy
    • 2 years ago
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    |dw:1369728808616:dw|

  36. Emily778
    • 2 years ago
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    is the first one actually 15?

  37. Kapt_Crazy
    • 2 years ago
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    and if the lines are the same length rhss then the angles are the sme

  38. yummydum
    • 2 years ago
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    is the entire line 12, or is half the line 12?

  39. qweqwe123123123123111
    • 2 years ago
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    - "is the first one actually 15?" Which part of "The answer to the first problem is not 15" is giving you problems? Look at my diagram and all will be clear - IF you THINK about it.

  40. Kapt_Crazy
    • 2 years ago
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    qweqwe is right if the line full length is 12. but if it was the full length the would have centerewd the 12 and not had it ofcentered

  41. Kapt_Crazy
    • 2 years ago
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    off centered

  42. yummydum
    • 2 years ago
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    it goes out from the radius perpendicularly, it cant be off-center

  43. Kapt_Crazy
    • 2 years ago
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    |dw:1369729065516:dw|

  44. Kapt_Crazy
    • 2 years ago
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    |dw:1369729144486:dw|

  45. Kapt_Crazy
    • 2 years ago
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    i still believe the ans is 15

  46. qweqwe123123123123111
    • 2 years ago
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    Yes, I see what you're saying, and you may have a valid point. And if the picture is drawn to scale, then your argument is further supported. So if the long leg is 12, then the radius is indeed a nice, neat 15.

  47. Kapt_Crazy
    • 2 years ago
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    yeah else it would be 10. sumthing

  48. Fazeelayaz
    • 2 years ago
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    sqrt117 36+81=117

  49. qweqwe123123123123111
    • 2 years ago
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    Yeah, a far less than neat 10.82 or so. :-)

  50. Fazeelayaz
    • 2 years ago
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    are there any details aabout the length AB and CD are they given equal in question

  51. qweqwe123123123123111
    • 2 years ago
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    I'm gonna go with Kapt_Crazy on this one and say that the radius IS 15 for the first problem, based on the offset "12". But it sure would help if the producers of these diagrams would make things unambiguous for the viewers. On the last problem a leg was found based on the assumption that a particular line was tangent, without the problem giving any clues that it was. And as for the second problem, the 2 chords have hash marks which means they're congruent. If the 2 chords are congruent, then so are the angles they subtend, so x=40

  52. phi
    • 2 years ago
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    **. If the 2 chords are congruent, then so are the angles they subtend, so x=40 this follows from the two triangles being congruent by side-side-side: (radius, radius, = chord). therefore by corresponding parts of congruent triangles, the central angles are congruent.

  53. Emily778
    • 2 years ago
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    Thanks y'all

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