Question

pfvr me ajudem nessa questao​

Answer 1

Resposta:

a)

são correspondentes

$2x-75^{\circ}=\dfrac{3}{4}x\\ \\ mmc=4\\ \\ 8x-300=3x\\ \\ 8x-3x=300\\ \\ 5x=300\\ \\ x=\dfrac{300}{5}\\ \\\boxed{ x=60^{\circ}}$

$\dfrac{3}{4}x=\dfrac{3\times60}{4}=\dfrac{180}{4}=45^{\circ}$

$y+\dfrac{3}{4}x=180^{\circ}\to suplementares\\ \\ y+45=180\\ \\ y=180-45\\ \\ \boxed{y=135^{\circ}}$

b)

$7x=210^{\circ}\\ \\ x=210\div7\\ \\\boxed{ x=30^{\circ}}$

$y=210^{\circ}\to ~opostos~~pelo~~v\'ertice$