Which of the following is a geometric sequence?

Question

hhanan · Answer

attachment

babygirlimarie · Answer

the last one

jhonyy9 · Answer

do you know what is a geometric sequence ?

hhanan · Answer

no

hhanan · Answer

would it be number 2?

darkknight · Answer

number 2 is an arithmic sequence, because we are adding by 3 each time, 2 is an arithmic sequence. do you know what a geometric sequence is?

hhanan · Answer

no

darkknight · Answer

you don't know what a geometric sequence is or you don't agree with me?

hhanan · Answer

i dont know what it is

darkknight · Answer

oh okay, so an geometric sequence is a sequence formed by multiplying by the same value each time. 
For Example: 2, 4, 8, 16, 32, 64, 128, 256,, 512...
this is a geometric sequence because we multiplied by 2 each time. Understand?

hhanan · Answer

but i don't see that for any of them and i was thinking the first one but the end would not work either

darkknight · Answer

the first one is not multiplying by the same number
2 ,4 , 16, 48...
2 * 2 = 4
4 * 2 does not equal 16
16 * 2 does not equal 48
so the first is wrong

hhanan · Answer

for the 3rd on it add 3 each time

darkknight · Answer

correct it is the third one, you multiply by -5 each time. Good job

darkknight · Answer

5 , -25, 125, -625
5 * -5 = -25
-25 * -5 = 125
125 * -5 = 625.
Do u see how this works?

hhanan · Answer

ok thank you

darkknight · Answer

np, have a good day

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