How do u simplify -1+- sqrt -24

2 answers:

6 0

First find the square root of -24 which would be -4.898979486 then either subtract 1 or add negative 1, it's the same thing, and that would give you -5.898979486.

JulsSmile [24]3 years ago

3 0

So, the +/- means there are two answers, one that adds the √(-24) and one that subtracts the √(-24). You can leave that the way it is as +/-
The negative inside the square root is an imaginary number "i" = √(-1)
This is whats called a complex number which has the imaginary number "i".
Factor out the imaginary number and any perfect square factors of 24.
24 = 6 × 4
4 is a perfect square of 2, so 2 factors out of the square root.

-1 +/- √(-24)
-1 +/- i√(6×2²)
-1 +/- 2i√(6)

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The weight of a product is normally distributed with a mean of four ounces and a variance of .25 squared ounces. What is the pro

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Answer:

$P(X>3.75)=P(\frac{X-\mu}{\sigma}>\frac{3.75-\mu}{\sigma})=P(Z>\frac{3.75-4}{0.5})=P(z>-0.5)$

And we can find this probability using the complement rule and we got:

$P(z>-0.5)=1-P(z$

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".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

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

$X \sim N(4,\sqrt{0.25}=0.5)$