Question

determine ângulo x .

a) 84°
b) 90°
c) 82 °
d) 60°
e) 72°

P.s Ponha o calculo
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Answer 1

Resposta:

E)72°

Explicação passo-a-passo:

$\frac{7x}{6} +\frac{x}{3} +x$  = 180°

$\frac{7x+2x+6x}{6} = \frac{1080}{6}=> 15x=1080=>x=$ 72°

$\frac{7x}{6} =>\frac{7*72}{6} =$ 84°

$\frac{x}{3} =>\frac{72}{3} =>$24°

Answer 2

Resposta:

e) ---> 72°.

Explicação passo-a-passo:

$x+\frac{7x}{6} +\frac{x}{3}=180\\3x + \frac{21x}{6} + \frac{3x}{3}= 540\\3x +\frac{21x}{6} + x =540\\\frac{21x}{6} = 540-4x\\21x =6(540-4x)\\21x= 3240 -24x\\21x+24x=3240\\45x = 3240\\x = \frac{3240}{45}\\x = 72\\\\\\Att, Felipemlvr.$