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what is the 7th term of the geometric sequence -1,4,-16,...? Answers to choose from. a)-16,384 b)-4,096 c)4,096 d)16,384

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\[T _{n}=ar ^{n-1}\]
a= first term r = ratio between consecutive terms n = number of terms

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Can anybody solve this??
Yeah, use @Skaematik's formula. Just plug in what you know.
To get \(r\), what are you multiplying between each term?
@Skaematik are you sure the formula is right i got -4,096 and i dont believe that to be correct
-1 times what gives you 4? 4 times what gives you -16?
Well, the first thing to check is that it's negative. Since it's odd, and your odd terms are negative, it makes sense that it, too, is negative.
Why don't you think -4096 is correct?
because i thought it would have came out positive to 4,096 but i got -4,096
-4096 is correct.
ohh thank you both of you @geoffb @Skaematik

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