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butalik [34]
2 years ago
11

elise says "if you subtract 13 from my number and multiply the difference by -4, the result is -48." what is elise's nunber

Mathematics
2 answers:
monitta2 years ago
7 0

Answer:

Elise's number is 25.

Step-by-step explanation:

-4(x - 13) = -48

-4x + 52 = -48

      -52     -52

------------------------

-4x = -100

/-4      /-4

-------------------------

x = 25

Brilliant_brown [7]2 years ago
6 0

Answer:

Elise's number is 25.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Let call R the event that a person is rascal, RC a person is not rascal, TH a person use top hat and NTH a person don’t use top hat.  

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2. A person could be rascal and don’t use top Hat: this probability is calculate as the multiplication of the probability of be a rascal (0.5) and not use a top hat (0.9), then:

P(R y NTH)=0.5*0.1=0.05

3. A person could be not rascal and use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and use a top hat (0.3), then:

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4. A person could be not rascal and not use top Hat: this probability is calculate as the multiplication of the probability of not be a rascal (0.5) and not use a top hat (0.7), then:

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Then the probability that a person is a rascal given that he is wearing a top hat could be written and calculate as:

P(R/TH)=\frac{P(R y TH)}{P(TH)}

For calculate P(TH) we need to sum all the option in which TH is involve so:

P(TH) = P(R y TH)+ P(RC y TH)

P(TH)=0.45+0.15=0.6

Replacing values on the first equation we get:

P(R/TH)=\frac{0.45}{0.6} =0.75

So, the probability that a person is a rascal given that he is wearing a top hat is 0.75

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