Question

se (2, x, 12, ...) e (4, 8, y,...) forem diretamente proporcionais determine y - x​

Answer 1

2 / 4  = x / 8

4x = 2 * 8

4x = 16

x = 16/4

x = 4

2 / 4  = 12 / y

2y = 4 * 12

2y = 48

y = 48/2

y = 24

y - x

= 24 - 4

= 20