Odpowiedź:
Zad 7
[tex] a) \: \frac{7}{12} h = \frac{35}{60} = 35 \: min \\ b) \: 57 \: min = \frac{57}{60} = \frac{19}{20} h \\ c) \: \frac{1}{3} h = \frac{20}{60} = 20 \: min \\ d) \: 39 \: min = \frac{39}{60} = \frac{13}{20} h \\ e) \: 0.15h \: = \frac{15}{100} = \frac{3}{20} = \frac{9}{60} = \: 9 \: min \\ f) 18 \: min \: = \frac{18}{60} = \frac{3}{10} h[/tex]
Pozdrawiam i liczę na naj :)
