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djverab [1.8K]
3 years ago
15

4-3+2-7 hello freedny wakaka

Mathematics
1 answer:
kakasveta [241]3 years ago
6 0

Answer:4-3+2-7=-4          

Your Welcome :)

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Bruce is going to call one person from his contacts at random. He has 25 total contacts. 20 of those contacts are from his neigh
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<h3>P(call a person not from his neighborhood) = (\frac{1}{5} )</h3>

Step-by-step explanation:

Here, the total number of contacts in the list if Bruce  = 25 contacts

The total number of neighbors in the contact = 20 people

Now, let E: Event of calling a person from his neighborhood

So, P(E) = \frac{\textrm{Total Favorable Outcomes}}{\textrm{Total Outcomes}}  = \frac{20}{25} = (\frac{4}{5})

So, the probability of calling a person from his neighborhood  is (\frac{4}{5} )

⇒P(E) = (\frac{4}{5} )

Now,as we know: P(E)  + P(not E) = 1

So, the probability of NOT calling a person from neighborhood

= 1 -  probability of calling a person from his neighborhood

= 1 - (\frac{4}{5}) = \frac{5-4}{5}   = (\frac{1}{5})

⇒P( not E) = (\frac{1}{5} )

Hence,  P(call a person not from his neighborhood) = (\frac{1}{5} )

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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