Question

calcule a soma do pg infinito de (20,10,5...)

Answer 1

dados:
a1=20....q=10/20=1/2.....(1-q)=1 -1/2=1/2

S = a1/ (1-q) =20/ 1/2 = 20. 2/1 = 40 ✓

Answer 2

q=a2/a1

q=10/20

q=10÷10/20÷10

q=1/2

sn =a1/(1-q)

sn=20/(1-1/2)

sn=20/(1-0,5)

sn=20/(0,5)

sn=20÷(0,5)

sn=40

espero ter ajudado!

boa tarde!