Question

Vă rog ajutati-ma la exercițiul 21

Answer 1

Răspuns

Explicație pas cu pas:

1,1/1,65 = 110/165 = 10/15 = 2/3 = 4/6 = 22/33 = 22/66

22/33 = (22/10) / (33/10) = 2,2/3,3

Answer 2

I)

$\it \dfrac{1,1}{1,65}=\dfrac{2,2}{3,3}\Rightarrow \dfrac{1,1}{1,65-1,1}=\dfrac{2,2}{3,3-2,2}\Rightarrow \dfrac{1,1}{0,55}=\dfrac{2,2}{1,1}\Rightarrow\\ \\ \\ \Rightarrow 1,1\cdot1,1=2,2\cdot0,55 \Rightarrow 1,21=1,21\ (A)$

II)

$\it \dfrac{1,1}{1,65}=\dfrac{2,2}{3,3}\Rightarrow \dfrac{1,1}{1,65+1,1}=\dfrac{2,2}{3,3+2,2}\Rightarrow \dfrac{1,1}{2,75}=\dfrac{2,2}{5,5}\Rightarrow\\ \\ \\ \Rightarrow 1,1\cdot5,5=2,2\cdot2,75 \Rightarrow 6,05=6,05\ (A)$

III)

$\it \dfrac{^{100)}1,1}{1,65}=\dfrac{^{10)}2,2}{3,3}\Rightarrow \dfrac{110^{(5}}{165}=\dfrac{\ 22^{(11}}{33}\Rightarrow \dfrac{22}{33}=\dfrac{2}{3}\Rightarrow\\ \\ \\ \Rightarrow 22\cdot3=33\cdot2 \Rightarrow 66=66\ (A)$