Odpowiedź:
q = [tex]\frac{3}{5}[/tex]
[tex]a_4 = 27[/tex]
więc
[tex]a_1*q^3 = a_1*(\frac{3}{5} )^3= 27[/tex]
[tex]a_1*\frac{27}{125} = 27 / *\frac{125}{27}[/tex]
[tex]a_1 = 125[/tex]
Odp. 125 cm
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Szczegółowe wyjaśnienie:
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Odpowiedź:
q = [tex]\frac{3}{5}[/tex]
[tex]a_4 = 27[/tex]
więc
[tex]a_1*q^3 = a_1*(\frac{3}{5} )^3= 27[/tex]
[tex]a_1*\frac{27}{125} = 27 / *\frac{125}{27}[/tex]
[tex]a_1 = 125[/tex]
Odp. 125 cm
===============
Szczegółowe wyjaśnienie: