Question

Cine ma poate ajuta la aceste puncte dau coroana ​

Answer 1

Răspuns:

Explicație pas cu pas:

c)

0,(1) = 1/9

2/18 = 1/9

(1/9)^5*(1/9)^x = (1/9)^10

(1/9)^x = (1/9)^10 : (1/9)^5 = (1/9)^5

x = 5

______________

d)

0,4 = 4/10 = 2/5

(2/5)^x : (2/5)^6 = (2/5)^6

(2/5)^x = (2/5)^6*(2/5)^6 = (2/5)^12

x = 12