Question

determinar o décimo termo da P.A
(3,5,7,...)

Answer 1

fórmula: an = a1+(n-1).r
r= 5x3=2

a1=3+(12-1).2
a1=3+11.2
a1=3+22
a1=25

Pa=(3,5,7,9,11,13,15,17,19,21,23,25)