Answer:
x=25 and angle 1=65°
Step-by-step explanation:
40°+3x°=(5x-10)°
40°+3x°=5x°-10°
40°+10°=5x°-3x°
50°=2x°
50°/2°=2x°/2°
25=x
therefore, angle 1
y+(5x-10)°=180°
y+(5x25-10)°=180°
y+(125-10)°=180°
y+(115)°=180°
y+115°=180°
y=180°-115°
y=65°
Using; sum of two interior angles equals exterior angle
95
40+3x=5x-10(exterior angle is equal to the sum of interior opposite angles)
30=2x
x=15
40+3x+Angle1=180
Angle1=180-(40+(3x15))
Angle1=180-85
=95
