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AVprozaik [17]
2 years ago
7

40 POINTS!!!!!!!

Mathematics
1 answer:
Ket [755]2 years ago
3 0

The sum of the amounts of change in the bacteria after the seventh day is 6554.

<h3>What is the  geometric sequence about?</h3>

The sequence are:

2, -8, 32, -128

Note that a first term of:

(a) of 2

A common ratio (r) of -8/2 = -4.

So the sum of n terms is said to be:

 Sn = a1·(r^ n -1)/(r -1)

For the given sequence, the sum of 7 terms is said to be:

 S7 = 2·((-4)^7 -1)/(-4-1)

= 2(-16384/-5)

= 6554

Therefore, The sum of the amounts of change in the bacteria after the seventh day is 6554.

Learn more about  geometric sequence from

brainly.com/question/17166546?referrer=searchResults

#SPJ1

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