Question

descubra o valor de x,sabendo que r//s//t

Answer 1

Boa noite

a)

5 --- 4
x --- 12

4x = 60

x = 60 / 4

x = 15

b)

1 --- 1,5
x --- 1,8

1,5x = 1,8

x = 1,8 / 1,5

x = 1,2

c)

15 --- x
 6 --- 5

6x = 75

x = 75 / 6

x = 12,5

d)

x ---- 3
8 ---- 2x 

2x² = 24

x² = 24 / 2

x² = 12

x = √12

x = 2√3

x = 3,46 aproximadamente.