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aev [14]
3 years ago
10

1. A super-deadly strain of bacteria is causing the zombie population to double every two days. currently, there are 25 zombies.

After how many days will there be 25600 zombies?
2. Use the function from the previous question. If the current population is 5,000,000,000 people, after how many days will there be no humans left?
Mathematics
1 answer:
Dvinal [7]3 years ago
4 0
1. Is 124 days

2. ia 200,000,000

Ur welcome
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first we find the common difference.....do this by subtracting the first term from the second term. (9 - 3 = 6)...so basically, ur adding 6 to every number to find the next number.

we will be using 2 formulas....first, we need to find the 34th term (because we need this term for the sum formula)

an = a1 + (n-1) * d

n = the term we want to find = 34

a1 = first term = 3

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now we sub

a34 = 3 + (34-1) * 6

a34 = 3 + (33 * 6)

a34 = 3 + 198

a34 = 201

now we use the sum formula

Sn = (n (a1 + an)) / 2

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s34 = 6936/2

s34 = 3468 <=== the sum of the first 34 terms:

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