Question

Na figura abaixo, o valor do ângulo x é:

a)60°

b)98°

c)65°

d)70°​

Answer 1

$\Box \ \ \boxed{\begin{array}{l}\sf x+105+87+x+28=360 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 2x=360-220 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 2x=140 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=\frac{140}{2} \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=70 \end{array}}$

Resposta correta;

Alternativa d) x = 70

Answer 2

$\sf x+x+28\degree+87\degree+105\degree=360\degree$

$\sf x+x=360\degree-28\degree-87\degree-105\degree$

$\sf 2x=332\degree-192\degree$

$\sf 2x=140$

$\sf x=\dfrac{140}{2}$

$\boxed{\boxed{\sf x=70\degree}}$

$\boxed{\boxed{\sf Letra~D}}$

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Mᴇsᴛʀᴇ ᴇᴍ $\LaTeX$

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