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hodyreva [135]
3 years ago
8

ASAP What is the multiplicity of the root (x^3-1)?

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
5 0
Answer: =(x - 1) x (x^2 + x + 1)
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in a population distribution a score of x=28 corresponds to z=-1.00 and a score of x=34 what is the mean and standard deviation
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x=28\implies z=\dfrac{28-\mu}\sigma\implies \mu-\sigma=28

x=34\implies z=\dfrac{34-\mu}\sigma\implies \mu+\sigma z=34

We need the exact value of z to find a proper solution, but a general one can still be found. Subtracting the first equation from the second gives

(\mu+\sigma z)-(\mu-\sigma)=34-28\implies (z+1)\sigma=6\implies \sigma=\dfrac6{z+1}

Plug this into either equation and you get

\mu-\dfrac6{z+1}=28\implies \mu=28+\dfrac6{z+1}

(It's guaranteed that z\neq-1 in this case because that already corresponds to x=28.)
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