Question

Pessoal me ajudem aí Pf tarefa pra amanhã

Answer 1

a)
$2x+x=90 \\ 3x=90 \\ x=90\div3 \\ x=30 ^\° \\ \\ med(D\widehat{O} E)=x=30 ^\° \\ \\ med(E\widehat{O} F)=2x=2.(30)=60 ^\°$

b)
$5x+10+4x-10=180 \\ 9x=180 \\ x=180\div9 \\ x=20 ^\° \\ \\ med(H\widehat{O}I)=4x-10=4(20)-10=80-10=70 ^\° \\ \\ med(I\widehat{O}J)=5x+10=5(20)+10=100+10=170 ^\°$

c)
$x-5+2x+5=90 \\ 3x=90 \\ x=90\div3 \\ x=30 ^\° \\ \\ med(K\widehat{O}L)=2x+5=2.(30)+5=60+5=65 ^\° \\ \\ med(N\widehat{O}M)=x-5=30-5=25 ^\°$