Question

1,2,3,4 repedeeee pana diseara la 18:00 dau coroana

Answer 1

Raspuns:

Exicatie pas cu pas:

1) a |____|_____|_____|

b |_____|______|______|______|______|_____|____|

70:10=7(un segment)

a=7×3=21

b=7×7=49

Verificare:49+21=70

2)a) (a+b)/2=16,95

a=b-10,9

(b-10,9+b):2=16,95 |×2

b-10,9+b=33,9

2b=44,8

b=22,4

a=11,5

b) a=2b

(2b+b):2=16,95

3b=33,9

b=11,3

a=22,6

3 si 4 in atașament