Question

AYUDA PORFAVOR SOLO EL SEGUNDO PLIS​

Answer 1

Explicación paso a paso:

ángulo exterior de un ∆:

B = A + C

(110 + x) = (2x - 5) + (4x + 15)

110 + x = 2x - 5 + 4x + 15

110 + 5 - 15 = 2x + 4x - x

100 = 5x

x = 100/5

x = 20°

A = 2x - 5° = 2(20)° - 5° = 35°

B = 110° + x = 110° + 20° = 130°

C = 4x + 15 = 4(20) + 15 = 95°

y = 180° - B = 180° - 130° = 50°