Question

Se dau proportiile: 4 supra 9 supra 1 pe 3 =x supra 1 pe 4 : d) 0,001 supra 0,3 =0,2 supra x Ajutatima va rog eu din tot sufletu !!!!!

Answer 1

(4/9)/(1/3)=A/(1/4)
(4/9)x3=Ax4
12/9=4A
4/3=4A
4x(1/3)=4xA
1/3=A

0,001/0,3=0.2/x

(1/1000)/(3/10)=(2/10)/x
(1/1000)x(10/3)=(2/10)/x
(1/100)x(1/3)=(1/5)x
1/300=(1/5)x
(1/300)/(1/5)=x
(1/300)x5=x
5/300=x
x=1/60