Question

dois ângulos complementares têm suas medidas expressas em graus por 3×+25°e 4×-5° quantos mende esses ángulo?​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\textsf{{\^A}ngulos complementares somam }\mathsf{90\textdegree}$

$\mathsf{3x + 25\textdegree + 4x - 5\textdegree = 90\textdegree}$

$\mathsf{7x = 90\textdegree - 20\textdegree}$

$\mathsf{7x = 70\textdegree}$

$\mathsf{x = \dfrac{70\textdegree}{7}}$

$\boxed{\boxed{\mathsf{x = 10\textdegree}}}$

$\mathsf{3x + 25\textdegree = 3(10) + 25}$

$\mathsf{3x + 25\textdegree = 30 + 25}$

$\boxed{\boxed{\mathsf{3x + 25\textdegree = 55\textdegree}}}$

$\mathsf{4x - 5\textdegree = 4(10) - 5}$

$\mathsf{4x - 5\textdegree = 40 - 5}$

$\boxed{\boxed{\mathsf{4x - 5\textdegree = 35\textdegree}}}$

Answer 2

Resposta:

3x+25+4x-5=90

7x+20=90

7x=70

x=10°