Question

Calculati mas. Mas <-lor D si A invers proportionale cu 1,(6) si 2,5.

Answer 1

 $1,(6)=\frac{16-1}{9}=15 / 9 = 5 / 3\;;\\ 2,5=\frac{25}{10}=\frac{5}{2} \;;\\ \frac{D}{3/5}=\frac{A}{2/5}\; \\ \rightarrow\;\;D\cdot\frac{2}{5}=A\cdot\frac{3}{5}\;|_{\cdot5}\\ deci \;\;2 \,D=3\, A \;mai\;departe\; lipsesc\;date \;...$