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ki77a [65]
3 years ago
10

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

Mathematics
1 answer:
love history [14]3 years ago
6 0

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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