Question

The angles of a triangle are 5(y-1) , 3(ly - 5) and 9y.
Find y and assign the name of the triangle ​

Answer 1

Step-by-step explanation:

• 5(y-1) + 3(y-5) + 9y = 180°
• 5y - 5° + 3y - 15° + 9y = 180°
• 17y -20° = 180°
• 17y = 180° + 20°
• 17y = 200°
• y = 200/17
• y = 11.76°