3 years ago

Absolute value of -4 - 8i

Mathematics

1 answer:

Nitella [24]3 years ago

4 0

√80 because the absolute value for complex numbers of the form a+bi are evaluated as √a²+b²

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Step-by-step explanation:

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3 years ago

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The answer will be:

b ≥ 10

Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 500$

The standard deviation is $\sigma = 100$

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$P(350 < X 650 ) = P(\frac{ 350 - 500}{ 100}$

Generally

$\frac{X - \mu }{\sigma } = Z (The \ standardized \ value \ of \ X )$

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$P(350 < X 650 ) = P(-1.5$

$P(350 < X 650 ) = P(Z < 1.5) - P(Z < -1.5)$

From the z-table $P(Z < -1.5 ) = 0.066807$

and $P(Z < 1.5 ) = 0.93319$

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=> $P(350 < X 650 ) = 0.866$

Therefore the percentage is $P(350 < X 650 ) = 86.6\%$

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3 years ago

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Answer:

Step-by-step explanation:

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