Question

2) Resolva usando a regra de três simples:
a) 3/6 = 4/x

b) 40/100 = x/15

c) 3/2 = 6/x

d) 10/65 = 4/x

e) 2/3 = 10/x​

Answer 1

Resposta:

a) x = 8

b) x = 6

c) x = 4

d) x = 26

e) x = 15

Explicação passo-a-passo:

a)

$\frac{3}{6} = \frac{4}{x} \\ 3x = 24 \\ \: x = \frac{24}{3} \\ x = 8$

b)

$\frac{40}{100} = \frac{x}{15} \\ 100x = 600 \\ x = \frac{600}{100} \\ x = 6$

c)

$\frac{3}{2} = \frac{6}{x} \\ 3x = 12 \\ x = \frac{12}{3} \\ x = 4$

d)

$\frac{10}{65} = \frac{4}{x} \\ 10x = 260 \\ x = \frac{260}{10} \\ x = 26$

e)

$\frac{2}{3} = \frac{10}{x} \\ 2x = 30 \\ x = \frac{30}{2} \\ x = 15$

espero que esteja correto