the question in English is
The sum of the first twelve terms of a Pg of ratio 3 is 265,720. Determine the first term
we know that
When we need to sum a Geometric Sequence the formula is equal to
![Sum=a1*[(1-r^(n))/(1-r) ] \\ 265,720=a1*[(1-3^(12))/(1-3) ]\\ 265.720=a1*[265,720]\\ a1=1](https://img.qammunity.org/2019/formulas/mathematics/middle-school/djzkm0njs9akvmrgbg39nqt9z5fkiv355i.png)
therefore
the answer is
the first term is equal to 1
the answer in Portuguese
nós sabemos isso
Quando precisamos somar uma Seqüência Geométrica, a fórmula é igual a
![Soma=a1*[(1-r^(n))/(1-r) ] \\ 265,720=a1*[(1-3^(12))/(1-3) ]\\ 265.720=a1*[265,720]\\ a1=1](https://img.qammunity.org/2019/formulas/mathematics/middle-school/yu2iq90cq0l6n1b5un8k8dopfsea2uc7ek.png)
assim sendo
a resposta é
o primeiro termo é igual a 1