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Sphinxa [80]
3 years ago
12

What is the probability that the next flood will occur four years from now?

Mathematics
1 answer:
Mrac [35]3 years ago
6 0
1 in 100 or 1/100 would be the probability
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What is 100,203 in expanded form.
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We'll solve for each one of them:

\sum_{i=1}^{4}4(5)^{i-1} = (4(5)^{1-1}) + (4(5)^{2-1}) + (4(5)^{3-1}) + (4(5)^{4-1})
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\sum_{i=1}^{5}3(4)^{i-1} = (3(4)^{1-1}) + (3(4)^{2-1}) + (3(4)^{3-1}) + (3(4)^{4-1}) + (3(4)^{5-1})
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\sum_{i=1}^{2}5(6)^{i-1} = (5(6)^{1-1}) + (5(6)^{2-1})
=5+30=35

\sum_{i=1}^{4}5^{i-1} = (5^{1-1})+(5^{2-1})+(5^{3-1})+(5^{4-1})
=1 + 5+ 25+125 = 156

So, our totals are: 624, 1023, 35, and 156. So clearly, 1023 > 624 > 156 > 35. W can write it as (your answer):

\sum_{i=1}^{2}5(6)^{i-1}

Hope this helps! If anything is confusing, you can always DM me.
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Answer:

2/3

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