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3 years ago

Cubic parent function

1 answer:

3 0

<em>In a cubic function, the highest degree on any variable is three. The function f(x) = x3 is the parent function. You start graphing the cubic function parent graph at the origin (0, 0).</em>

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-2(5+6g) equivale expression

inysia [295]

Answer:

solve for g

-2(5+6g) = -10 +-12g =0

-12g=10

g=10/-12 = -5/6

Step-by-step explanation:

7 0

2 years ago

A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she

Nataly_w [17]

Answer:

The minimum sample size needed is $n = (\frac{1.96\sqrt{\sigma}}{4})^2$ . If n is a decimal number, it is rounded up to the next integer. $\sigma$ is the standard deviation of the population.

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:

$\alpha = \frac{1 - 0.9}{2} = 0.05$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.05 = 0.95$ , so Z = 1.645.

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.

How large a sample must she select if she desires to be 90% confident that her estimate is within 4 ounces of the true mean?

A sample of n is needed, and n is found when M = 4. So

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

$4 = 1.96\frac{\sigma}{\sqrt{n}}$

$4\sqrt{n} = 1.96\sqrt{\sigma}$

$\sqrt{n} = \frac{1.96\sqrt{\sigma}}{4}$

$(\sqrt{n})^2 = (\frac{1.96\sqrt{\sigma}}{4})^2$

$n = (\frac{1.96\sqrt{\sigma}}{4})^2$

The minimum sample size needed is $n = (\frac{1.96\sqrt{\sigma}}{4})^2$ . If n is a decimal number, it is rounded up to the next integer. $\sigma$ is the standard deviation of the population.

4 0

3 years ago

What is 2. 84 repeating as a mixed number in simplest form

Shalnov [3]

The answer would be 2 21/25.

8 0

3 years ago

All help is much appreciated please and thank you

Klio2033 [76]

Once again similar traingles.

With same ratioes as before.

RS/RT = RV/RU=SV/TU = 1/2

$\frac{w - 41}{w} = \frac{1}{2} \\ 2w - 82 = w \\ w = 81 \: units$

5 0

3 years ago

A camera has a listed price of $800.95 before tax. If the sales tax rate is 8.25%, find the total cost of the camera with sales

maria [59]

Answer:

$867.03

Step-by-step explanation:

6 0

2 years ago