Question

ayuda por faaaaaaaaaaa​

Answer 1

PROBLEMA 1

$2a + 100 = 180 \\ 2a = 180 - 100 \\ 2a = 80 \\ a = \frac{80}{2} \\ a = 40$

$x + 100 + a = 180 \\ x + 100 + 40 = 180 \\ x + 140 = 180 \\ x = 180 - 140 \\ x = 40$

PROBLEMA 2

$θ° + 3θ° + 5θ° + 9θ° = 180° \\ 18θ° = 180° \\ θ° = \frac{180°}{18} \\ θ° = 10°$

PROBLEMA 3

$180° - 2B + 180° - 2C + 40° = 180° \\ 360° + 40° = 180° + 2B + 2C \\ 400° - 180° = 2(B + C) \\ 220° = 2(B + C) \\ \frac{220°}{2} = B + C \\ 110° = B + C$

$B + C + x = 180° \\ 110° + x = 180° \\ x = 180° - 110° \\ x = 70°$

PROBLEMA 4

$x + 132° + 90° + 90° = 360° \\ x + 312° = 360° \\ x = 360° - 312° \\ x = 48°$