Ответ:
189
Объяснение:
[tex]b_{4}=24; q=2[/tex]
[tex]24=b_{1} *2^{4-1}[/tex]
[tex]24=b_{1} *2^{3}[/tex]
[tex]24=8b_{1}[/tex]
[tex]b_{1} =3[/tex]
[tex]S_{n}= \frac{b_{1}(q^{n}-1 ) }{q-1}[/tex]
[tex]S_{6}= \frac{3(2^{6}-1 ) }{2-1} =3*(2^{6}-1)=3(64-1)=3*63=189[/tex]
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Answers & Comments
Ответ:
189
Объяснение:
[tex]b_{4}=24; q=2[/tex]
[tex]24=b_{1} *2^{4-1}[/tex]
[tex]24=b_{1} *2^{3}[/tex]
[tex]24=8b_{1}[/tex]
[tex]b_{1} =3[/tex]
[tex]S_{n}= \frac{b_{1}(q^{n}-1 ) }{q-1}[/tex]
[tex]S_{6}= \frac{3(2^{6}-1 ) }{2-1} =3*(2^{6}-1)=3(64-1)=3*63=189[/tex]