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3 years ago

How should I solve this? I tried to but I couldn't get past the quadratic formula.

Mathematics

1 answer:

xxMikexx [17]3 years ago

8 0

First multiply all terms by z
8-z^2=4z

Then order into standard form
-z^2-4z+8=0

Multiply the equation by -1
z^2+4z-8=0

Plug into quadratic equation
-4±√16-4(-8)
-4±√48

(-4±4√3)/2
-2±2√3

Final answer: z=-2± 2√3

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Answer:

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Answer:

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And we can find this probability to find the answer:

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And using the normal standar table or excel we got:

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Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

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$P(z$

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