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3 years ago

What is the range of f(x)= -2x+5 with domain {1,2,3,4}?

Mathematics

1 answer:

Karolina [17]3 years ago

7 0

Range is any number besides 1,2,3,4

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Determine whether the function f: ZxZ → Z

Vsevolod [243]

Answer:

the correct anwser is d I think

Step-by-step explanation:

Glad I could help :)

6 0

3 years ago

A college student needs 11 classes that are worth a total of 40 credits in order to complete her degree. The college offers both

LenaWriter [7]

It would be: 4f+3h= 40

5 0

3 years ago

To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and find

loris [4]

Answer:

Option D - $[0.12$

Step-by-step explanation:

Given : The manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s=0.16.

To find : The 95% confidence interval for the population standard deviation sigma?

Solution :

Number of sample n=19

The degree of freedom is Df=n-1=19-1=18

The standard deviation of the sample is s=0.16

Applying chi-square table to find critical value,

Upper critical value of $\chi^2$ is $UC=\chi(\frac{0.05}{2},18) = 31.5264$

Lower critical value of $\chi^2$ is

$LC=\chi(1-\frac{0.05}{2},18) = 8.2307$

Lower limit of the 95% confidence interval for the population variance

$L=\frac{(df)\times (s^2)}{UC}$

$L=\frac{18\times (0.16^2)}{31.5264}$

$L=\frac{18\times0.0256}{31.5264}$

$L=\frac{0.4608}{31.5264}$

$L=0.0146$

Upper limit of the 95% confidence interval for the population variance

$U=\frac{(df)\times(s^2)}{LC}$

$U=\frac{18\times (0.16^2)}{8.2307}$

$U=\frac{18\times0.0256}{8.2307}$

$U=\frac{0.4608}{8.2307}$

$U=0.0559$

So, The 95% confidence interval for the population variance is [0.0146, 0.0560]

Now, The 95% confidence interval for the population standard deviation is

$[\sqrt{0.0146}$

$[0.1208$

or $[0.12$

Therefore, Option D is correct.

The 95% confidence interval for the population standard deviation is $[0.12$

6 0

2 years ago

8) A bag contains 5 red marbles and

hammer [34]

2/3

Step-by-step explanation:

the anwser would be either 2/3 or 1/3

7 0

3 years ago

What are the possible values for n to make ABC a valid triangle?

OLEGan [10]

Answer:

8n -3

Step-by-step explanation:

Because first you rewrite the problem then you substitute and simplify

8 0

3 years ago