Question

What is the 7th term of the geometric sequence –1, 3, –9, …?

Answer 1

what are we multiplying each term by to get the next term?

Answer 2

nothing it doesn't say?

Answer 3

I'm asking you. What times -1 equals 3?

Answer 4

3?

Answer 5

Not quite, but your close .... -1 times 3 equals -3. What times -1 equals +3?

Answer 6

-3 times-1

Answer 7

right, so you multiply by -3 each time to get the next term.
The first 3 terms are -1, 3, -9. What's the next?

Answer 8

each term is being multiplied by
\[-3\] to get the next term. so you need
\[-1(-3)^6\] to get the 7th terms

Answer 9

my options are -2187,729,2187,-729

Answer 10

you multiply by -3 to get each term. the 3rd term is -9. so what's the 4th term?

Answer 11

2187?

Answer 12

what's -9 times -3?

Answer 13

27

Answer 14

ok so that's the 4th term. what's the 5th term?

Answer 15

36

Answer 16

how do you get 36?

Answer 17

hello?

Answer 18

omg i dont know your confusing

Answer 19

It's pretty simple. Let me explain. The first term is -1. For every term after that, you multiply by -3. So

First term: -1
Second term: -1 * -3 = 3
Third term: 3 * -3 = -9
Fourth term: -9 * -3 = 27

Do you see the pattern? You're just multiplying by -3 each time. so what's the 5th term?

Answer 20

idk

Answer 21

To get the 5th term, you multiply the 4th term by -3. What is it?

Answer 22

Hello?

Answer 23

81

Answer 24

Almost, that's 27 * 3. You forgot the negative sign.

Answer 25

So the fifth term is -81, not 81. What's the next (6th) term?

Answer 26

729

Answer 27

thanks u

Answer 28

No

Answer 29

That's not right

Answer 30

for the 7th term? omg i give up nvm

Answer 31

what's -81 times -3?

Answer 32

haha never mind, if you are giving up then i'll give up too

Answer 33

k

Answer 34

hello!? Can ktklown please explain this!? I need help with this and Im confused too!