3 years ago

Write as a product of linear factors: f(x)=x^4-100

Mathematics

1 answer:

Veseljchak [2.6K]3 years ago

8 0

(x^2 + 10) (x^2 - 10)

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A researcher surveyed 220 residents of a city about the number of hours they

olga55 [171]

Answer:

Margin of error of 0.0485 hours.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.025 = 0.975$ , so Z = 1.96.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this question:

$\sigma = 0.35, n = 220$

The margin of error is of:

$M = z\frac{\sigma}{\sqrt{n}}$

$M = 1.96\frac{0.35}{\sqrt{200}}$

$M = 0.0485$

Margin of error of 0.0485 hours.

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3 years ago

Determine the area of the rectangular ABCD with AB=5cm and BC=3cm. A 5cm B 3 cm D C с Determine the area of the triangular AB wi

lbvjy [14]

Ac is 20cm and an is 5 cm u jus have to add them together

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Solve the equation for the specified variable. P= V-I/S. For I.

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Changing the subject of the formula

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Solve for x.

Trava [24]

Answer:

You said what now?

Step-by-step explanation:

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Arturiano [62]

No, this is a question.

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