Question

9. Determine o valor de x nas proporções. a) 15 4 30 X ​

Answer 1

$\geqslant \: resolucao \\ \\ > \frac{15}{4} = \frac{30}{x} \\ \\ > 15x = 4 \times 30 \\ \\ > 15x = 120 \\ \\ > x = \frac{120}{15} \\ \\ > x = 8 \\ \\ \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \leqslant \geqslant \geqslant$

Answer 2

Resposta:

$x = 8$

Explicação passo-a-passo:

$\frac{4}{15} = \frac{x}{30}$

$15x = 4 .30 \\ 15x = 120 \\ x = \frac{120}{15}$

$x = 8$