All categories

3 years ago

Use graphing calculator to find the zeros and local maximum ad minimum of polynomial functions.

Mathematics

1 answer:

Elanso [62]3 years ago

6 0

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

$f(x)=x^{3}-5x^{2}+5x-1$

using a graphing tool

see the attached figure

The local maximum is the point $(0.61.0.42)$

The local minimum is the point $(2.72,-4.27)$

The zeros of the function are $(0.27,0)$ , $(1,0)$ , $(3.73,0)$

You might be interested in

What’s is this ? a20 b22 c27 d21

Zina [86]

Answer:

it would be c because you add them

6 0

3 years ago

Read 2 more answers

we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to

Maksim231197 [3]

Answer:

A sample of 1077 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

42% of freshmen do not visit their counselors regularly.

This means that $\pi = 0.42$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.035. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.035 = 2.327\sqrt{\frac{0.42*0.58}{n}}$

$0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}$

$\sqrt{n} = \frac{2.327\sqrt{0.42*0.58}}{0.035}$

$(\sqrt{n})^2 = (\frac{2.327\sqrt{0.42*0.58}}{0.035})^2$

$n = 1076.8$

Rounding up:

A sample of 1077 is required.

3 0

3 years ago

Solve for x A. x=72 B. x=27 C. x=108 D. x=63

erastovalidia [21]

X + x + 36 = 90
2x = 54
x = 27 Answer

4 0

3 years ago

create a function and explain why it is a function using academic vocabulary (input ,output, mapping, vertical line test and fun

Tems11 [23]

An example would be using points
(0,0)(1,2)(7,14)(10,20)

it is a function because each input has only one input.

or

using the vertical line test none of the points are on the same line

6 0

3 years ago

The ages of three siblings combined is 27. The oldest is twice the age of the youngest. The middle child is 3 years older than t

kondaur [170]

Answer:

the oldest sibling is 12 years old.

The middle child is 9 years old.

The youngest child is 6 years old.

Step-by-step explanation:

Let the age of the youngest child be x

Then the oldest child will be 2x.

The middle child will be x + 3.

Since the combined age is 27;

x + 2x + x + 3 = 27

4x = 27 - 3

x = 24 / 4

x = 6

now 2x = 12 and x + 3 = 9

7 0

3 years ago

Read 2 more answers