Respuesta :

Since  is the midpoint the two segments created are equal.

8x - 10 = 150
8x = 160
x = 20

Hope this helps :)
Banabanana
RZ = ZT
8x-10 = 150
8x = 160
x = 160/8
x = 20

RT = RZ + ZT
      = 8x-10 + 150
      = 8*20-10 + 150
      = 150 + 150
      = 300

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