Question

A razão da P.A em que o 1º termo é 17 e o 32º termo é -45

Answer 1

Olá !

Para respondermos à essa pergunta corretamente, apenas precisamos fazer uso da seguinte fórmula.

R = (An - Ak)/(n - k)

Agora que você tem conhecimento da fórmula, poderá facilmente encontrar a razão jogando as informações do enunciado dentro da mesma.

R = (An - Ak)/(n - k)

R = (-45 - 17)/(32 - 1)

R = -62/31

R = -2

Portanto, a partir de todo esse raciocínio que acabamos de fazer podemos assim concluir a razão é -2.

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