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Find the value of the variable and ST if S is between R and T.

RS=7a, ST=12a, RS=28

No clue what so ever how to do this.

  • Geometry -

    If RS = 28 AND RS = 7a, then 28 = 7a and a = 4

    ST then = 12a = 48

    Presumably RT is a line with point S 7/19 of the way from R to T
    Although they don't ask you for RT, it is 28 + 48 = 76

  • Geometry -

    Thanks so much!

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