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Gnoma [55]
3 years ago
13

Please help as soon as possible

Mathematics
1 answer:
ch4aika [34]3 years ago
8 0

To solve this problem you must apply the proccedure shown below:

You must switch the variables, and then, you must solve for y, as following:

x=-\frac{1}{2} \sqrt{y} +3\\ (x-3)^{2} = (\frac{1}{2}\sqrt{y})^{2}   \\ y=4x^{2} -24x+36\\ f^{-1}  (x)=4x^{2} -24x+36

Therefore, as you can see, the answer is: f^{-1} (x)= 4x^{2} -24x+36


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a) 0.8333

b) 0.75

c) 0.8181 or 0.9090

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a)

The probability the visitor selects an authentic painting is  

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Since the opinion of the expert does not depend on your choice, the events are <em>independent</em>, so the probability that the expert says is authentic and it really is, is

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c)

If the expert decides the painting is a copy and it is not, then there are 11 paintings of which 9 are authentic, so the probability the visitor selects a new original painting is

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If the expert decides the painting is a copy and it is, then there are 11 paintings of which 10 are authentic, so the probability the visitor selects a new original painting is

10/11= 0.9090

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Answer:

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