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lilnicki32

  • 4 years ago

the perimeter of a triangle is 76 cm. side a of the triangle is twice as long as side b. side c is 1 cm longer than side a. find the length of each side.

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  1. abz_tech
    • 4 years ago
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    hmm do u want the answer or just a hint?

  2. lilnicki32
    • 4 years ago
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    the answer

  3. abz_tech
    • 4 years ago
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    |dw:1321814483458:dw| x+2x+2x+1=76 5x = 76-1 x=15

  4. ktklown
    • 4 years ago
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    the answer is a=30 b=15 c=31

  5. abz_tech
    • 4 years ago
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    b= 15, a = 30, c = 31

  6. ktklown
    • 4 years ago
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    if you just want the answer, there it is

  7. lilnicki32
    • 4 years ago
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    i meant the way u solve it and the answer

  8. ktklown
    • 4 years ago
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    done! :-)

  9. abz_tech
    • 4 years ago
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    there look at my nub drawing

  10. ktklown
    • 4 years ago
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    Sure... a = tan(b) b+tan(a)=pi c = 45/sin(c*a*pi^2) solve all that and you get a=30, b=15, c=31

  11. lilnicki32
    • 4 years ago
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    i meant solve it for me

  12. waheguru
    • 4 years ago
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    http://openstudy.com/#/updates/4ec94b02e4b095539996fe90

  13. abz_tech
    • 4 years ago
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    -.-.... x+2x+2x+1=76 5x = 76-1 x=15 b= 15, a = 30, c = 31

  14. ktklown
    • 4 years ago
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    i will solve it for you... a = tan(b) b+tan(a)=pi c = 45/sin(c*a*pi^2) a = tan(b) = sin(pi)+4 a = sin(pi) + 4 a = 30 b +tan(a) = pi tan(a) = pi - b b = pi^2 + 4 b = 15 c = a+1 c = 30 + 1 c = 31 does that make sense?

  15. lilnicki32
    • 4 years ago
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    the first side of a triangle is 8 m shorter than the second side. the third side is 4 times as long as long as the first side. the perimeter is 26 m. find the length of each side.

  16. ktklown
    • 4 years ago
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    right, a=30, b=15, c=31

  17. ktklown
    • 4 years ago
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    oh wait this is a new problem?

  18. ktklown
    • 4 years ago
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    sorry, i'll solve this one too

  19. ktklown
    • 4 years ago
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    a = cot(45)^2 + 30 a = pi^2 - e^t + 30 a = 3 b = a^2 / cot(45) * pi^3 b = a^2 - 30 b = 11 c = b+a^4 - n(4) c = b^2 -2a c = 12 so the answer is a=3, b=11, c=12

  20. ktklown
    • 4 years ago
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    you can check it's right because a+b+c=26

  21. ktklown
    • 4 years ago
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    i hope this was helpful

  22. lilnicki32
    • 4 years ago
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    can u do it in another way

  23. abz_tech
    • 4 years ago
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    sec

  24. ktklown
    • 4 years ago
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    i can help you do it another way. call the first side "a", the second side "b" and the third side "c". it says "the first side is 8 meters shorter than the second side". can you write that as an equation?

  25. ktklown
    • 4 years ago
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    A is 8 meters shorter than B. can you write that down as an equation?

  26. abz_tech
    • 4 years ago
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    |dw:1321815214355:dw|

  27. lilnicki32
    • 4 years ago
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    no u just do it

  28. ktklown
    • 4 years ago
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    i did it already above

  29. ktklown
    • 4 years ago
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    if you just want the answer copy what i wrote

  30. ktklown
    • 4 years ago
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    if you actually want to learn then write something down

  31. abz_tech
    • 4 years ago
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    so... x-8+x+4(x-8) = 26

  32. abz_tech
    • 4 years ago
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    now solve that

  33. abz_tech
    • 4 years ago
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    for x

  34. ktklown
    • 4 years ago
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    there you go, you have the answer two different ways now

  35. lilnicki32
    • 4 years ago
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    ok i cant get it

  36. lilnicki32
    • 4 years ago
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    can u please solve it

  37. abz_tech
    • 4 years ago
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    -.- take a paper and a pen/pencil and draw that diagram

  38. ktklown
    • 4 years ago
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    I'm sorry nicki But I'm not going to help any more. You are not putting any effort into this at all. Like, 0 effort. You're just waiting for the answers so you can copy them down and turn them in.

  39. lilnicki32
    • 4 years ago
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    i did

  40. ktklown
    • 4 years ago
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    what did you do? show me how far you got and I will help

  41. abz_tech
    • 4 years ago
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    first side is 8 cm shorter so, b is x, a = x-8

  42. abz_tech
    • 4 years ago
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    third side is 4 times bigger than first side... so... 4(x-8)

  43. abz_tech
    • 4 years ago
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    they dotn tell u about b so we consider it 'x'

  44. lilnicki32
    • 4 years ago
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    im trying my best ok

  45. abz_tech
    • 4 years ago
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    there fore we get the equation, x+4(x-8)+x-8=26

  46. lilnicki32
    • 4 years ago
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    yeah

  47. abz_tech
    • 4 years ago
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    x+4x-32+x-8=26

  48. abz_tech
    • 4 years ago
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    solve it now, bring the x to one side and numbers to other

  49. abz_tech
    • 4 years ago
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    you should know this, if ur getting those questions for homework/revising..it pretty much basic algebra

  50. lilnicki32
    • 4 years ago
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    yea

  51. lilnicki32
    • 4 years ago
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    can u please solve it for me please im beggin you

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