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daidai123
12.11.2020 •
Mathematics
Algebra things!! which of these relations are functions ?
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Ответ:
The second one and the very last ones are functions because both of those don't repeat the same number
Step-by-step explanation:
brainliest pls
Ответ:
The probability is 0.2411
Step-by-step explanation:
Let's call: W the event that the neighbor will remember to water the plant, NW th event that the neighbor will not remember to water the plant and D the event that the plant will die.
So, the probability that the plant died because your neighbor forgot to water it is:
P(NW/D) = P(NW∩D)/P(D)
Where P(D) = P(NW∩D) + P(W∩D)
P(NW∩D) is the probability that the neighbor forgot to water the plant and the plant is died. That is calculated as:
P(NW∩D) = 0.15*0.9 = 0.135
Because 0.15 is the probability that the neighbor will not remember to water the plant and 0.9 is the probability that the plant given that it is not water.
At the same way, P(W∩D) is the probability that the neighbor water the plant and the plant is died. That is calculated as:
P(W∩D) = 0.85*0.5 = 0.425
Because 0.85 is the probability that the neighbor will not remember to water the plant and 0.5 is the probability that the plant will die given that it is water.
Then, The probability P(D) is:
P(D) = 0.135+0.425
P(D) = 0.56
Finally The probability P(NW/D) that the plant died because your neighbor forgot to water it is:
P(NW/D) = 0.135/0.56
P(NW/D) = 0.2411