Find the next three terms of the sequence 5,-10,20,-40
2 answers:
Answer:
200,-1000,5000
Step-by-step explanation:
First we need to find the common ratio
Take the second term and divide by the first
-10/2 = -5
To find the 5th term take the 4th term and multiply by the common ratio
-40*-5 = 200
To find the 6th term take the 5th term and multiply by the common ratio
200 *-5 = -1000
To find the 7th term take the 6th term and multiply by the common ratio
-1000*-5 = 5000
Answer:
80, -160, 320
Step-by-step explanation:
5,-10,20,-40
It's a Geometric sequence with:
r = -10/5 = -2
-40 × -2 = 80
80 × -2 = -160
-160 × -2 = 320
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