Question

Determine o valor de x as medidas estão em cm:
(A)x=2,138...
(B)x=3,14...
(C)x=4,12...
(D)x=1,25...

Answer 1

Opção correta: (A) x = 2,138...

Para determinar o valor de x, basta aplicarmos o teorema de Tales.

$\large\begin{array}{l}\sf \dfrac{2,31}{1,85}=\dfrac{2,67}{x}\\\\\sf 2,31~.~x=2,67~.~1,85\\\\\sf 2,31x=4,9395\\\\\sf x=\dfrac{4,9395}{2,31}\\\\\red{\sf x=2,138...}\end{array}$

$\large\red{\boxed{\mathbb{ATT:SENHOR~~SOARES}}}$

Answer 2

Resposta:

(A)x=2,138....

Explicação passo-a-passo:

2,31/2,67 = 1,85/x

x = 1,85/2,31÷2,67

x = 1,85 × 2,67/2,31

x = 2,138

OU

2,31/(2,31+1,85) = 2,67/(2,67+x)

(2,67+x) = 2,67 × (2,31+1,85)/2,31

x = [2,67 × (2,31+1,85)/2,31] - 2,67

x = 2,138