Question

5:20::X:400

3:x::3:7

24:0.45::X:08


me podrian ayudar​

Answer 1

Respuesta:

$\frac{5}{20} = \frac{x}{400} \\ \\ \frac{1}{4} \times 400 = x \\ \\ \frac{400}{4} = x \\ \\ 100 = x \\ comprobacion \\ \frac{5}{20} = \frac{100}{400} \\ \\ \frac{1}{4} = \frac{1}{4}$

Explicación paso a paso:

$\frac{3}{x} = \frac{3}{7} \\ \\ x = \frac{3}{7} \div 3 \\ \\ x = \frac{3}{21} \\ comprobación \\ 3 \times \frac{3}{21} = \frac{3}{7} \\ \\ \frac{9}{21} = \frac{3}{7} \\ \\ \frac{3}{7} = \frac{3}{7}$

$24 \div 0.45 = x \div 0.8 \\ 53.3 = x \div 0.8 \\ 53.3 \times 0.8 = x \\ 42.64 = x$