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creativ13 [48]
3 years ago
10

Given that there is a 20% chance of rain today,what is the probability that they lose their game​

Mathematics
1 answer:
den301095 [7]3 years ago
7 0

Answer:

Either it rains and they lose, which has probability 20% * 20% = 4%.  

Or it doesn't rain and they lose, which has probability 80% * 50% = 40%.  

Adding these two probabilities gives us 44%

Step-by-step explanation:

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3 years ago
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Soloha48 [4]

Answer: You need to wait at least 6.4 hours to eat the ribs.

t ≥ 6.4 hours.

Step-by-step explanation:

The initial temperature is 40°F, and it increases by 25% each hour.

This means that during hour 0 the temperature is 40° F

after the first hour, at h = 1h we have an increase of 25%, this means that the new temperature is:

T = 40° F + 0.25*40° F = 1.25*40° F

after another hour we have another increase of 25%, the temperature now is:

T = (1.25*40° F) + 0.25*(1.25*40° F) = (40° F)*(1.25)^2

Now, we can model the temperature at the hour h as:

T(h) = (40°f)*1.25^h

now we want to find the number of hours needed to get the temperature equal to 165°F. which is the minimum temperature that the ribs need to reach in order to be safe to eaten.

So we have:

(40°f)*1.25^h = 165° F

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h = ln(4.125)/ln(1.25)  = 6.4 hours.

then the inequality is:

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4 0
3 years ago
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Answer:

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8 0
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