Question

va roa ajutati si pe mine repede dau coroana

Answer 1

Mult succes în continuare !

Answer 2

6)

$\it Fie\ x\ \c{s}i\ y\ cele\ dou\breve{a}\ numere.\\ \\ \\ x-y=10\ \ \ \ (*)\\ \\ \\ \dfrac{x}{y}=2,25 \Rightarrow \dfrac{x}{y}=\dfrac{\ 225^{(25}}{100} \Rightarrow \dfrac{x}{y}= \dfrac{9}{4} \stackrel{(derivare)}{\Longrightarrow} \dfrac{x}{9}=\dfrac{y}{4}=\dfrac{x-y}{9-4}\ \stackrel{(*)}{=}\ \dfrac{10}{5}=2\Rightarrow\\ \\ \\ \Rightarrow \begin{cases}\it \dfrac{x}{9}=2 \Rightarrow x=9\cdot2=18\\ \\ \it \dfrac{y}{4}=2\Rightarrow y=4\cdot2=8\end{cases}$