Odpowiedź:
7. a) [tex]\frac{10}{100} = \frac{1}{10}[/tex]
[tex]\frac{40}{100}=\frac{4}{10} =\frac{2}{5}[/tex]
[tex]\frac{80}{100}=\frac{8}{10}=\frac{4}{5}[/tex]
b) [tex]\frac{30}{100} = \frac{3}{10}[/tex]
[tex]\frac{60}{100} =\frac{6}{10}=\frac{3}{5}[/tex]
[tex]\frac{90}{100} =\frac{9}{10}[/tex]
c) [tex]\frac{5}{100} =\frac{1}{20}[/tex]
[tex]\frac{15}{100} =\frac{3}{20}[/tex]
[tex]\frac{55}{100} =\frac{11}{20}[/tex]
8. a) 45% = 0,45
94% = 0,94
76% = 0,76
b) 30% = 0,30 = 0,3
60% = 0,60 = 0,6
80% = 0,80 = 0,8
c) 4% = 0,04
7% = 0,07
109% = 1,09
9. a) prawdopodobnie 25% ale tu nie wiem
b) [tex]\frac{3}{5}=\frac{60}{100}= 60%[/tex]%
c) [tex]\frac{2}{5} = \frac{40}{100}= 40%[/tex]%
d) [tex]\frac{3}{10} = \frac{30}{100} = 30%[/tex]%
Szczegółowe wyjaśnienie:
