Question

Observe a P.A (1,4,7...) E calcule
29° termo

Answer 1

$\Large\boxed{\begin{array}{l}\sf(1,4,7\dotsc)\\\sf r=7-4=3\\\sf a_{29}=a_3+26r\\\sf a_{29}=7+26\cdot3\\\sf a_{29}=7+78\\\sf a_{29}=85\end{array}}$

Answer 2

Resposta:

$\textsf{Segue a resposta abaixo}$

Explicação passo-a-passo:

$\mathsf{ a_n=a_1+(n-1)\cdot\underbrace{\sf (a_2-a_1)}_{\sf r}}$

$\mathsf{a_{29}=1+(29-1)\cdot(4-1) }$

$\mathsf{ a_{29}=1+28\cdot3}$

$\mathsf{a_{29}=1+84 }$

$\boxed{\boxed{\mathsf{ a_{29}=85}}}$