Question

Determine o valor de x em cada caso: Minha Figura A) a) 8; b) 2; c) 8; d) 5,3 B) a) 2; b) 8; c) 8; d) 5,3 C) a) 2; b) 2; c) 8; d) 5,3 D) a) 5,3; b) 2; c) 8; d) 2

Answer 1

Explicação passo-a-passo:

A)

$\dfrac{x}{4} = \dfrac{5}{10}$

Multiplique cruzado

$10 \times x = 4 \times 5$

$10x = 20$

$x = \dfrac{20}{10}$

X=>2✓

B)

$\dfrac{x}{4} = \dfrac{7}{14}$

Multiplique cruzado

$14 \times x = 7 \times 4$

$14x = 28$

$x = \dfrac{28}{14}$

X=>2✓

F)

$\dfrac{3}{4} = \dfrac{8}{x}$

Multiplique cruzado

$3 \times x = 32$

$3 \times x = 8 \times 4$

$3x = 32$

$x = \dfrac{32}{3}$✓

G)

$\dfrac{3}{4} = \dfrac{8}{2x}$

Multiplique cruzado

$3 \times 2x = 8 \times 4$

$6x = 32$

$x = \dfrac{32}{6}$

$x = \dfrac{32 {}^{ \div 2} }{6 {}^{ \div 2} }$

$x = \dfrac{16}{3}$✓