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3 years ago

Is this a function? {(8,-2),(4,-6),(6,-8),(7,5),(2,4)} Then state the domain and range.

Mathematics

1 answer:

Pani-rosa [81]3 years ago

6 0

Here looking at x in (x,y) pairs

$\\ \sf\longmapsto 8\neq4\neq6\neq 7\neq 2$

Every value has a unique image
Hence its a function

$\\ \sf\longmapsto D_f=\{8,4,6,7,2\}$

$\\ \sf\longmapsto R_f=\{-2,-6,-8,5,4\}$

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Answer:

Step-by-step explanation:

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3 years ago

Suppose that P(A)=0.5, P(B)= 0.4 and P(B/A) =0.6. Find each of the following.

Lady_Fox [76]

Part (a)

P(A) = 0.5

P(B) = 0.4

P(B/A) = 0.6

P(A and B) = P(A)*P(B/A)

P(A and B) = 0.5*0.6

P(A and B) = 0.3

<h3>Answer: 0.3</h3>

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Part (b)

We'll use the result from part (a)

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.5 + 0.4 - 0.3

P(A or B) = 0.6

<h3>Answer: 0.6</h3>

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Part (c)

A and B are not independent since P(B) does not equal P(B/A). The fact that event A happens changes the probability P(B). Recall that P(B/A) means "probability P(B) based on event A already happened". A and B are independent if P(B) = P(B/A).

Events A and B are not mutually exclusive since P(A or B) is not zero.

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3 years ago

PLEASE HELP ME ILL GIVE BRAINLIEST

ser-zykov [4K]

It would be B. I had this same question.

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3 years ago

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Sergio [31]

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e^{2x}(1-t)=t+1\\\\
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x=\dfrac{\ln\left(-\dfrac{t+1}{t-1}\right)}{2}\qquad t\in(-1,1)



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4 years ago

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Answer:

3 2/3

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3 years ago