Question

As dori rezolvarea ex.15 pct.b
Multumesc

Answer 1

Răspuns:

4

Explicație pas cu pas:

0,(5)·√(81/625)+0,8=(5/9)·√(9²/25²)+0,8=(5/9)·(9/25)+0,8=1/5+0,8=0,2+0,8=1

0,(6)·√576+2²=(6/9)·√(24²)+4=(2/3)·24+4=2·8+4=20

0,4·√0,25=0,4·0,5=0,2

=>1/20=0,2/x => x= 20·0,2=4