anonymous
  • anonymous
Janet said that the common difference in the sequence below is -2. Is she correct? Justify your answer using complete sentences and proper grammar. 1, -2, 4, -8....
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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freckles
  • freckles
well what are the following equal to term-previous term: -2-1= 4-(-2)= -8-4=
freckles
  • freckles
if they are all the same number then the sequence does have a common difference and whatever number that is is the common difference
anonymous
  • anonymous
So yeah

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freckles
  • freckles
did you actually perform the differences above?
anonymous
  • anonymous
yes .
freckles
  • freckles
-2-1=? 4-(-2)=? -8-4=?
freckles
  • freckles
so you got each one of those is -2?
anonymous
  • anonymous
No
freckles
  • freckles
right the answer is no the sequence doesn't have a common difference because -2-1 is not the same as 4-(-2) or the same as -8-4
anonymous
  • anonymous
but i thought because when multiplied by -2 idk i thought multiplying made sense
freckles
  • freckles
common difference assumes you have an arithemetic sequence and we don't
anonymous
  • anonymous
ooohhhhhhhhh
freckles
  • freckles
common ratio assumes we have a geometric sequence which we do
freckles
  • freckles
the word that makes the whole thing false is the difference word
freckles
  • freckles
if they said common ratio then it would have been true
anonymous
  • anonymous
ohh , thank you so much .
freckles
  • freckles
since term/previous term =-2 that is -2/1=4/-2=-8/4=-2
freckles
  • freckles
and np

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