camposcynthia26 camposcynthia26

10-06-2020
Mathematics

contestada

What is the value of y?
O A. 30°
OB. 40°
O C. 50°
O D. 60°

What is the value of y O A 30 OB 40 O C 50 O D 60 class=

Respuesta :

jimthompson5910 jimthompson5910

10-06-2020

Answer: B. 40

For any triangle, the three angles always add to 180

(y+10)+(2y)+(50) = 180

3y+60 = 180 ... combine like terms

3y+60-60 = 180-60 ... subtract 60 from both sides

3y = 120

3y/3 = 120/3 .... divide both sides by 3

y = 40

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