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2 years ago

Graph the equation.

Mathematics

1 answer:

omeli [17]2 years ago

5 0

9514 1404 393

Answer:

see attached

Step-by-step explanation:

Sometimes the quadratic is easier to graph if written in vertex form.

y = -x^2 -6x -3

= -(x^2 +6x) -3

= -(x^2 +6x +9) -3 +9

= -(x +3)^2 +6

This is a parabola that opens downward, with its vertex at (-3, 6). Unlike the one shown in the graph already, its scale factor is 1, so it will appear narrower than the one given with the problem statement.

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A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The es

Mrrafil [7]

Answer:

The minimum sample size required to construct a 95% confidence interval for the population mean is 65.

Step-by-step explanation:

We are given the following in the question:

Population standard deviation,

$\sigma = 3.10\text{ milligrams}$

We need to construct a 95% confidence interval such that the estimate is within 0.75 milligrams of the population mean.

Thus, the margin of error must me 0.75

Formula for margin of error:

$z_{critical}\times \dfrac{\sigma}{\sqrt{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.75 = 1.86\times \dfrac{3.10}{\sqrt{n}}\\\\\sqrt{n} = \dfrac{1.96\times 3.10}{0.75}\\\\\sqrt{n} = 8.101\\\Rightarrow n = 65.63\approx 65$

Thus, the minimum sample size required to construct a 95% confidence interval for the population mean is 65.

5 0

2 years ago

And why is it a function

andreyandreev [35.5K]

It's not a function because the x value 2 has two y values

8 0

3 years ago

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Lina20 [59]

Answer:

on what jsoshshsisshsushshdu?

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2 years ago

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Cuál enunciado No es verdadero con respecto al valor de la varieble n en la siguiente ecuación?

aliina [53]

Answer:

es la c

Step-by-step explanation:

Explicación paso a paso:ya que para que de 0 tiene que ser un número negativo, tiene que ser el número inverso a 2/3, entonces n= -2/3 que tiene el mismo valor absoluto que 2/3

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3 years ago

Please help me, Thank you :)

aliina [53]

Answer:

I am pretty sure its the first one

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2 years ago

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