Question

1)determine a razao de cada uma das progressoes aritimeticas, e em seguida classifique as: a)(2,7,12,........) b)(20,,10,0,-10......) c)(-5,-5,-5,.....) d)(-5/2,-3,-7/2,.....)

Answer 1

Resposta:

Explicação passo a passo:

$a)$

$raz\tilde{a}o=7-2=12-7=5$

$b)$

$raz\tilde{a}o=10-20=0-10=-10-0=-10$

$c)$

$PA\:constante=> raz\tilde{a}o=0$

$d)$

 $r=-3-(-\frac{5}{2})$

 $r=-3+\frac{5}{2}$

 $r=-\frac{6}{2}+ \frac{5}{2}$

 $r=-\frac{1}{2}$

 $r=-\frac{7}{2}-(-3)$

 $r=-\frac{7}{2}+3$

 $r=-\frac{7}{2}+\frac{6}{2}$

 $r=-\frac{1}{2}$

 

$raz \tilde{a}o=-\frac{1}{2}$

$At \acute{e}\:Breve!$