Question

9. De la figura, calcular “x"

a) 35°
b) 50°
C) 10°
d) 40°​

Answer 1

Hola!

Respuesta:

Alternativa D

Explicación paso a paso:

■ Solución:

$Ecuación \: \: 01: \\ \\ a + b + 70\degree = 180\degree \\ a + b = 180\degree - 70\degree \\ a + b = 110\degree \\ \\ (90 \degree - x) + 90\degree + (a + a) + (b + b) = 360\degree \\ 180\degree - x + 2a + 2b = 360\degree \\ 2(a + b) - 180\degree = x \\ 2(110\degree) - 180\degree = x \\ 220 \degree - 180\degree = x \\ 40\degree = x$