After batman brought the joker to justice, the crime rate in arkham city decreased by 12% percent. previously, the crime rate was c incidents per 1000 people.
which of the following expressions could represent the crime rate in arkham city after batman brought the joker to justice?

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Ответ:

nyjaelynn

25.03.2021

Mathematics

Our required probability is $\dfrac{4}{13}$

Step-by-step explanation:

Let A be the events that he chooses an ace.

so, P(A) = $\dfrac{4}{52}$

Let H be the events that he chooses a heart.

so, P(H) = $\dfrac{13}{52}$

We need to find P(either A or H).

So, according to rules of probability:

$P(A\cup H)=P(A)+P(H)-P(A\cap H)\\\\P(A\cup H)=\dfrac{4}{52}+\dfrac{13}{52}-\dfrac{1}{52}\\\\P(A\cup H)=\dfrac{4+13-1}{52}\\\\P(A\cup H)=\dfrac{16}{52}=\dfrac{4}{13}$

Hence, our required probability is $\dfrac{4}{13}$

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After batman brought the joker to justice, the crime rate in arkham city decreased by 12% percent. previously, the crime rate was c incidents per 1000 people.which of the following expressions could represent the crime rate in arkham city after batman brought the joker to justice?