Math HELP

#1
find the value of x if RS = 4(x-3)+6 and RT = 5(2x-6).
x= 12
x= 6
x= 4***
x= 3
#2
which of the following statements are always true? Choose all that apply.
If the circumcenter of a triangle lies on the triangle, then the triangle is a right triangle.
The incenter of a triangle is equidistant from all three vertices.
The incenter of a triangle always lies with in the triangle.***
The circumscribed in and circumscribed about isosceles triangle that have the same center.***
You can circumscribe a circle about any three points in a plane.

Can someone please check these?

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asked by Tony
  1. #1 No way to tell. What is the relationship between RS and RT?
    If RS=RT, then x=4 is correct.

    #2
    choices A,C,E are true

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    posted by Steve
  2. Bisectors in triangles practice
    1. C
    2. B, D, F
    3. A, C
    4. B
    5. D
    6. A, C
    7. D
    8. D, C
    The questions with multiple answers either have multiple parts or just multiple answers.

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