tolong dijawab ya mohon makasih

a). 360 = 4y+5y+20+3y+10
=4y+5y+3y+20+10
=12y+30
12y = 360-30
y = 330/12 = 27,5

b). POQ= 4.y = 4.27,5 = 110°

c). QOR =5y+20 = 5.27,5+20 = 157,5°

d). ROS = 3y+10 = 3.27,5+10 = 92,5°


good luck...be a the best... ;-)

4y+5y+20+3y+10=180°
12y+30=180°
12y=180°-30
12y=150°
y=150:12=12.5

a) y=12.5
b)4y= 4x12.5= 50
c) 5y+20= 5x12.5+20=82.5
d) 3y+10=3x12.5+10=47.5
semoga membantu ya:)
klo memang benar jadikan jawaban sya yg terbaik ya:v