Question

For the geometric sequence 2, –10, 50, –250, ..., find the seventh term.

–156, 250

156, 250

–31, 250

31, 250
Im not sure what to do @tkhunny

Answer 1

My guess would be d but im not sure

Answer 2

@tkhunny

Answer 3

is x5 then -5

Answer 4

@tkhunny

Answer 5

How can you be "not sure"? Count them.

Term1: 2
Term 2: –10 = 2 * (-5)
Term 3: 50 = 2 * (-5)^2
Term 4: –250 = 2 * (-5)^3
...
Term 7: –250 = 2 * (-5)^6

That's all it is.

Answer 6

then d would be right

Answer 7

I never answer that question. YOU tell ME the correct result.

Answer 8

@xapproachesinfinity

Answer 9

@sweetburger

Answer 10

@Mehek14

Answer 11

it is d for sure

Answer 12

Seriously? Just show your intermediate results and PROVE it. You do NOT need anyone else's approval. Part of the learning of mathematics is establishing your personal confidence. Start now.

Answer 13

That's the spirit!