Question

Qual é a razão de uma PG com a1=3/10 e a2=5/4?

Answer 1

$A~~raz\~ao~~de~~uma~~PG~~se~~calcula~~por:~~~ \dfrac{a_2}{a_1} .~Ent\~ao:\\\\ a_1= \dfrac{3}{10}~~~~e~~~~a_2= \dfrac{5}{4} \\\\\\ q=\dfrac{ \dfrac{5}{4} }{\dfrac{3}{10}} \to~~~~divis\~ao~~de~~fra\c c\~oes:~~conserva~~a~~1\°~~e~~multiplica\\\\pelo~~inverso~~da~~2\°.\\\\ q=\dfrac{5}{4} \times \dfrac{10}{3} \to~~ q=\dfrac{50}{12}\to~~ \boxed{q = \dfrac{25}{6}}$