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Vaduva1890
a fost răspuns

Afla valoarea raportului( 2a+5b)/3b+10c,daca numerle a,b,c sunt direct proportionale cu 0,(3);0,0(3);0,00(3).Va rog!!!Am nevoie urgent,Ofer coronita si 15 puncte

Răspuns :

Renatemambouko

 0,(3)=3/9=1/3
0,0(3)=3/90=1/30
0,00(3)=3/900=1/300
a=k/3
b=k/30
c=k/300
( 2a+5b)/(3b+10c)
(2k/3+5k/30) / (3k/30+10k/300)=
=(2/3+5/30) / (3/30+1/30)=
=(20+5)/30 / (3+1)/30=
=25/4

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