Question

As retas r,s e t são paralelas .determine no valor de x em cada item

Answer 1

a)

$\frac{5}{x} = \frac{4}{12} \\ \\ 5 \times 12 = 4x \\ \\ 4x = 60 \\ \\ x = \frac{60}{4} = 15$

b)

$\frac{15}{5} = \frac{20}{x} \\ \\ 15x = 100 \\ \\x = \frac{100}{15} = \frac{20}{3} .$

c)

$\frac{2}{x} = \frac{3}{9} \\ \\ 3x = 18 \\ \\ x = \frac{18}{3} = 6.$