Question

Determina o valor da razão das progressões aritméticas a seguir
a) ( 12,17,22,27...)
b) (3,11,19,27...)
c) (2,13,24,35...)
d) ( 25,19,13,7...)​

Answer 1

➡️ A razão de uma progressão aritmética será obtida subtraindo o termo anterior do termo posterior

a) (12,17,22,27...)

• $\small{r=a2-a1}$

• $\small{r=17-12}$

• $\underbrace{\small{r=5}}$

b) (3,11,19,27...)

• $\small{r=a2-a1}$

• $\small{r=11-3}$

• $\underbrace{\small{r=8}}$

c) (2,13,24,35...)

• $\small{r=a2-a1}$

• $\small{r=13-2}$

• $\underbrace{\sf{r=11}}$

d) (25,19,13,7...)

• $\small{r=a2-a1}$

• $\small{r=19-25}$

• $\underbrace{\small{r=-6}}$