Odpowiedź:
x*y = 2*4 = 8
więc
y = [tex]\frac{8}{x}[/tex]
======
1 ) 5 = [tex]\frac{8}{x}[/tex] ⇒ 5 x = 8 ⇒ x = 8 : 5 = 1,6
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3 ) x = 3 więc y = [tex]\frac{8}{3}[/tex] = 2 [tex]\frac{2}{3}[/tex]
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Szczegółowe wyjaśnienie:
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Odpowiedź:
x*y = 2*4 = 8
więc
y = [tex]\frac{8}{x}[/tex]
======
1 ) 5 = [tex]\frac{8}{x}[/tex] ⇒ 5 x = 8 ⇒ x = 8 : 5 = 1,6
-----------------------------------------------------------
3 ) x = 3 więc y = [tex]\frac{8}{3}[/tex] = 2 [tex]\frac{2}{3}[/tex]
---------------------------------------------------------
Szczegółowe wyjaśnienie: