ODPohlman ODPohlman
  • 18-11-2020
  • Mathematics
contestada

15) What is the value of y?
(4y - 9)
40
5yº

15 What is the value of y 4y 9 40 5yº class=

Respuesta :

umairkazi924
umairkazi924 umairkazi924
  • 19-11-2020

angle1 = 4y - 9°

angle2 = 40°

angle3 = 5y°

Angle sum property

180° = angle1 + angle2 + angle3

Therefore,

180 = (4y - 9) + 40 + 5y

180 = 4y - 9 + 40 + 5y

180 = 9y + 31

180 - 31 = 9y

149 = 9y

149/9 = y

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