Question

determine a razão das seguintes progressões aritmericas:
a) (1,7,13,19)
b)(-7,-5,-3)
c)(10,8,6,4)
d)(1/2,1,3/2)
e)(4/5,3/5,2/5)​

Answer 1

Resposta:

a) (1,7,13,19)

    r =- 7 -1 = 6

b)(-7,-5,-3)

    r = -5 - (-7) = - 5 + 7 = 2

c)(10,8,6,4)

   r = 8 - 10

   r = -2

d)(1/2,1,3/2)

   r = 1 - 1/2 =  mmc = 2

   r = (2 - 1)/2

   r = 1/2

e)(4/5,3/5,2/5)

   r = 3/4 - 4/5      mmc = 20

   r = (15 - 12)/20

   r = 3/20​

Explicação passo-a-passo: