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Thread: Im having a massive brain fart at the moment and Hicky and Rayne are on

  1. #1
    princeso Kirby's Avatar
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    Default Im having a massive brain fart at the moment and Hicky and Rayne are on

    A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (9,5).
    Write the length L of the hypotenuse as a function of x.

    I have no clue how to do this at all. Help.

  2. #2
    Registered Users Regular Rayne's Avatar
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    hicky is an english major

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    princeso Kirby's Avatar
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    I don't know he's a smart guy.

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    This pic is definitely of me!! Solly's Avatar
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    Quote Originally Posted by Rayne View Post
    hicky is an english major
    well obviously that's the brain fart, Rayne

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    princeso Kirby's Avatar
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    Im imagining the end formula is going to be some sort of distance formula, how I get there and eliminate the Ys is beyond me.

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    princeso Kirby's Avatar
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    I think I have to make some sort of imaginary line, have it connect with imaginary points, and find the distance of the imaginary points in a forumula for distance...

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    Vanity of vanities, all is vanity Hicky's Avatar
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    i seem to remember this is pretty early trigonometry but on account of being an english major i have forcefully forgot how to maths

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    Registered Users Regular ElijahWyatt's Avatar
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    L=the square root of ((l9xl +5)/x)^2)+(l9xl+5)^2
    Am i right?
    x being the slope

    Edited! 2ce now so its clear what i ment, i knew what i ment in my head, but wrote it wrong.
    "As for me, all i know is that i know nothing"

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    Registered Users Regular Rayne's Avatar
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    the triangle is formed by the x axis and y axis. since it's a right triangle, the y intercept and x intercept are equal and the slope of the hypotenuse is -1.

    use the point slope form of the equation of a line:

    (y-y1)=m(x-x1)

    (y-5)=-1(x-9)

    y=-x+14

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    princeso Kirby's Avatar
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    nope

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    Registered Users Regular ElijahWyatt's Avatar
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    wait what?

    just because its a right traingle doesn't mean the middle piece is sloped in any specific way. The x axis leg could extend far longer than the y axis leg, meaning the slope of the line connecting the two(hypotnuse) would be really small making the line really big.
    "As for me, all i know is that i know nothing"

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    Registered Users Regular Rayne's Avatar
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    fuck im retarded

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    Registered Users Regular Rayne's Avatar
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    HOLD UP

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    princeso Kirby's Avatar
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    Its not an equilateral right triangle.

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    Registered Users Regular Rayne's Avatar
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    there is no way to solve this without more information

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    Registered Users Regular ElijahWyatt's Avatar
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    i edited my formula had a brain fart and used the slope i derived the forumla with instead of x, now it should be right.
    "As for me, all i know is that i know nothing"

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    what about .. eyebrows God's Avatar
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    hm im not sure immediately. i thought about constructing a function for y based on its limits but i dont think that'll work.

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    Registered Users Regular Rayne's Avatar
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    the length can be any number above 392

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    princeso Kirby's Avatar
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    Quote Originally Posted by Kirby View Post
    Its not an equilateral right triangle.
    I mean isosceles.

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    Registered Users Regular Rayne's Avatar
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    wait a second no it cant abifucwgofnqpegvfqwwd

  21. #21
    Registered Users Regular Rayne's Avatar
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    i hate myself right now

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    Registered Users Regular ElijahWyatt's Avatar
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    im 99% sure im right.
    The legth of it is based on the slope(the only unknown factor( so x) and a point on the line. I simplified a bunch of formulas into one easy formula, i can't believe i'm not correct.
    Really someone explain how my formula doesn't work for every single slope value ever(slopes have to be negative btw)
    "As for me, all i know is that i know nothing"

  23. #23
    Registered Users Regular Rayne's Avatar
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    Quote Originally Posted by Rayne View Post
    the triangle is formed by the x axis and y axis. since it's a right triangle, the y intercept and x intercept are equal and the slope of the hypotenuse is -1.

    use the point slope form of the equation of a line:

    (y-y1)=m(x-x1)

    (y-5)=-1(x-9)

    y=-x+14
    not only is this wrong but it didnt even answer the question. WHAT THE FUCKING F

  24. #24
    Registered Users Regular ElijahWyatt's Avatar
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    SHIT WHEN I SAY 9x +5 i mean the slope absolute valued + 5
    "As for me, all i know is that i know nothing"

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    what about .. eyebrows God's Avatar
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    Quote Originally Posted by ElijahWyatt View Post
    L=the square root of ((9x +5)/x)^2)+(9x+5)^2
    Am i right?
    x being the slope

    Edited!
    it wants a function of the coordinate x

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