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Setler [38]
3 years ago
9

Determine the given point is a solution to the equation. Show all work. 1) 3x-7y=4; (1,-1)

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0

Answer:

  NOT a solution

Step-by-step explanation:

Substitute the values of x and y and see if the equation is satisfied:

  3(1) -7(-1) = 3 +7 = 10 ≠ 4 . . . . . . the given point is not on the line

(1, -1) is not a solution to the equation.

_____

(-1, 1) is a solution

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Answer:

a) P(\bar X

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

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For this case we want this probability:

P(98

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And we can find this probability on this way:

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And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

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Part c

If we apply this formula to our probability we got this:

P(\bar X

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Part d

For this case we want this probability:

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And we can find this probability on this way:

P(-1.42

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