Question

calcule a26 na pa (-5,-3,-1, ...)

Answer 1

r =2
a1 = -5
a26 ?

an = a1 + (n - 1 ) . r
a26 = - 5 + (26 - 1) . 2
a26 = - 5 + ( 25 ).2
a26 = - 5 + 50
a26 = 45

PA = (-5,-3,-1,1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45)




         

Answer 2

Resposta:

$\textsf{Segue a resposta abaixo}$

Explicação passo-a-passo:

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

$\mathsf{a_{26}=-5+(26-1)\cdot2 }$

$\mathsf{a_{26}=-5+25\cdot2 }$

$\mathsf{a_{26}=-5+50 }$

$\boxed{\boxed{ \mathsf{ a_{26}=45}}}$