Question

Determine os valores de X nos triângulos seguintes:​

Answer 1

Resposta:

a)18°

b)80/3 ou 26,66...

Explicação passo-a-passo:

a)×+72+90=180

×+ 162=180

×=180-162

×=18

b)×+2×+40+60+180

3×+100=180

3×=180

3×=80

×=80/3

×=26,66...

Answer 2

Explicação passo-a-passo:

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$\mathtt{180 - 130 = 50}$

$\mathtt{50 + x + x = 180} \\ \mathtt{50 + 2x = 180} \\ \mathtt{2x = 180 - 50} \\ \mathtt{2x = 130} \\ \mathtt{x = \frac{130}{2} } \\ \red {\mathtt{x = 65}}$

$\boxed{\underline{\overline{\mathbb{_ \heartsuit^\heartsuit\: JOSÉ\:ARMANDO_\heartsuit ^{\heartsuit}}}}}$