Respostas

2014-07-23T15:16:56-03:00
X    x
-  = -  -25°
3    2
2x    3x
-    -   -  =25°
6       6
x=25.-1
         -
         6
x=4,16°
  • Usuário do Brainly
2014-07-24T14:32:03-03:00
 \frac{x}{3} = \frac{x}{2} -25 (alternos externos)

 \frac{2x=3x-150}{6}

x=150°
 \frac{x}{3} =  \frac{150}{3} = 50
°

 \frac{x}{2} -25= \frac{150}{2} -25=75-25=50°

y+10+ \frac{x}{2} -25=180  ( suplementares)

y+10+50=18=

y=180-60

y=120°

y+10=120°+10=130°