Question

12-quais são as medidas do ângulos 3+25°,3x,x+20° e +35°​

Answer 1

Resposta:

Resposta:

\begin{gathered}x + 25 + 3x + x + 20 + 2x + 35 = 360 \\ 7x + 80 = 360 \\ 7x = 360 - 80 \\ 7x = 280 \\ x = \frac{280}{7} \\ x = 40\end{gathered}

x+25+3x+x+20+2x+35=360

7x+80=360

7x=360−80

7x=280

x=

7

280

x=40

X+25=40+25 = 75°

3x= 3.40 = 120°

X+20=40+20=60°

2x+35=2.40+35=80+35=115°