Question

determine a razão de cada pg (-20,5,-5/4,...)​

Answer 1

Resposta:

$a_1=-20\\\\ a_2=5\\ \\ a_3=-{5\over4}$

$raz\tilde{a}o ~\to a_2:a_1=a_3:a_2\\ \\ 5:-20=-{5\over4}:5\\ \\ -{1\over4}=-{\not5\over4}\times{1\over\not5}\\ \\ -\dfrac{1}{4}=-\dfrac{1}{4}\\ \\ \\ raz\tilde{a}o \to -\dfrac{1}{4}$