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HACTEHA [7]
3 years ago
13

There is an 80% chance of rain tomorrow and a 20% chance the football game will be postponed. What is the probability that it wi

ll rain tomorrow and the football game will be postponed?
4%

16%

20%

60%

I tried 20 and it's not the answer
Mathematics
2 answers:
Fiesta28 [93]3 years ago
4 0

Answer:

16%

Step-by-step explanation:

80%=0.8

20%=0.2

0.8*0.2=0.16=16%

OlgaM077 [116]3 years ago
3 0
First turns those into fractions, now you should have 4/5 and 1/5.
Now to generate a chance the 2 events will happen in a row (Like rain and a postponed game) you need to multiply the 2 fractions together so it should come out with 4/25 or 16%
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<h3>Answer:   375</h3>

=========================================

Work Shown:

a = 300 = first term

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We multiply each term by 0.2, aka 1/5, to get the next term.

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----------

As a sort of "check", we can add up partial sums like so

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and so on. The idea is that each time we add on a new term, we should be getting closer and closer to 375. I put "check" in quotation marks because it's probably not the rigorous of checks possible. But it may give a good idea of what's going on.

----------

Side note: If the common ratio r was either r < -1 or r > 1, then the terms we add on would get larger and larger. This would mean we don't approach a single finite value with the infinite sum.

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