Question

Va rog. Urgeenttt !!! 1)3,8 * 0,(5)
2) 15 * 0,4(4) * 4 intregi 1 pe 2

Answer 1

$1)3,8*0,(5)=3,8* \frac{5}{9}= \frac{3,8*5}{9}=2 \frac{1}{9}=2,(1) \\ 2)15*0,4(4)*4 \frac{1}{2} =15* \frac{44-4}{90}* \frac{9}{2} =15* \frac{4}{9}* \frac{9}{2}=15*2=30$

Answer 2

$1).3,8*0,(5)=3,8* \frac{5}{9} = \frac{19}{9} =2,(1) \\ \\ 2).15*0,4(4)*4 \frac{1}{2} =15* \frac{40}{90} * \frac{9}{2} = \frac{600}{90} * \frac{9}{2} =\frac{5400}{180} = 30$