Question

determine a razão das seguintes P.G a)(4,-20,100,...)q= b) (75,15,3,...)q= c) (36,-216,1296,...)q= d) (-200,-20,-2,...)q= e) (448,-56,7,...)q= f)(4,5;-9;18;...)

Answer 1

a)(4,-20,100,...)q= - 20/4 ==> q= - 5

b) (75,15,3,...)q= 15/75 ==> q = 1/5

c) (36,-216,1296,...)q= - 216/36 ==> q= -6

d) (-200,-20,-2,...)q= -20/-200 ==> q= 1/20

e) (448,-56,7,...)q= - 56/448 ==> q = - 1/8

f)(4,5;-9;18;...)q= -9/4,5==>q= - 9/45/10 ==> q= - 90/45 ==> q= - 2

Answer 2

a) -5
b) 1/5
c) -6
d) 1/10
e) 1/8
f) -2

eu acho, se tiver dúvida, pergunte