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Math Help - last circle questions 4 & 5

  1. #1
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    last circle questions 4 & 5

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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by dgenerationx2 View Post
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    (29)

    m\widehat{BC}:m\widehat{BA}:m\widehat{AC}=2:4:6

    2x+4x+6x=360

    12x=360

    x=30

    m\widehat{BA}=4x=4(30)=120^{\circ}



    (31)

    m\angle AOD=\frac{1}{2}(100+80)=90^{\circ}




    (35)

    10x-30=7x

    3x=30

    x=10

    AP=7(10)=70
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  3. #3
    A riddle wrapped in an enigma
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    Quote Originally Posted by dgenerationx2 View Post
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    x^2=3(15)

    x=\sqrt{45}\approx 6.7

    4(y+4)=2(14)

    y+4=7

    y=3



    (19)

    8(AC)=5(16)

    8(AC)=80

    AC=10
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