Question

Tolong dijawab donk bsk mw dikumpul ya..

Answer 1

Ingat, bahwa sudut dlm segitiga = 180 derajat

a)180 = 50 + x + x
   180 = 50 + 2x
   2x = 180-50
   2x = 130
     x = 65

b)180 = 5x + 2x + x
   180 = 8x
    x = 180/8
    x = 22,5

c)180 = 60 + 3x + 2x
   180 = 60 + 5x
   5x = 180-60
   5x = 120
    x = 120/5 = 24

d)180 = 90 + 3x + 4x
   180 = 90 + 7x
    7x = 180-90
    7x = 90
      x = 90/7
      x = 12 6/7