Question

determine o valor de x nas seguintes figuras

Answer 1

a) x .5 =10.7

x = 70/5

x = 14

b) 8 . x = 12 . 3

x 36/8

x = 4,5

c) 25 . x = 20 . 5

x = 100/25

x = 4

d) 2x . x = 16 . 4

2x² = 64

x² = 64/2

x² = 32

x  = raiz quadrada de 32

x = 4 raiz quadrada de 2

e) ( 2x  + 2) . 2 = 12 . 5

4x + 4 = 60

4x = 60-4

x = 56/4

x = 14