Question

calcule o décimo termo da PA (8,15...)

Answer 1

an = a₁ + (n-1) r

a₁₀ = 8 + (10-1)7
a₁₀ = 8 +(9) 7
a₁₀ = 8 + 63
a₁₀ = 71      resposta

{8-15-22-29-36-43-50-57-64-71}