Question

verifique quais das equações podem ser chamada de PA e identifique a razão R

a) -18,11,-4__,__,__.....
b) 2,7,12,17__,__´,__....
c) 20,10,0,-10,-20,__,__...

Answer 1

Boa noite

b) 2,7,12,17, r = 7 - 2 = 5

c) 20,10,0,-10,-20, r = 10 - 20 = -10