Question

Determine o valor dos incognitas em cada casoa) 3x10° x+30° b) 45° 2X+15° ajuda pfv nao to consiguindo fazer

Answer 1

a)
3x+10+x+30=180°
4x+40=180
4x=180-40
4x=140
x=140/4
x=35°

b)
45+2x+15=180°
2x+60=180
2x=180-60
2x=120
x=120/2
x=60°

c)
z=115°
y=x
x+115=180
x=180-115
x=65°
y=65°

d)
z=25°
y=x
x+25=180
x=180-25
x=155°
y=155°

i)
x+40+60=180°
x+100=180
x=180-100
x=80°

j)
x+70+50=180°
x+120=180
x=180-120
x=60°
y=x+50
y=60+50
y=110°

k)
x+40+15+20=180°
x+75=180
x=180-75
x=105°

l)
2x+20+x+25+x+15=180°
4x+60=180
4x=180-60
4x=120
x=120/4
x=30°