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2 years ago

I need help with both thank you

Mathematics

1 answer:

kirill115 [55]2 years ago

6 0

Answer:

For the first one, it is 12. For the second one im not too sure but I would guess that it is 9.20.

Step-by-step explanation:

Please consider brainliest! Have a good day! Bye<3

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Help. show work please

olga2289 [7]

This would be an increase. You would have one fraction with 46 over 24 and next to it you would have X over 100. Multiply 46 times 100 and then divide that number by 24. This would be an increase of approximately 191.6

6 0

3 years ago

I need to know how to do these asap!!

ludmilkaskok [199]

Answer:

Step-by-step explanation:

y =4/3 x+4

slope intercept form

y = mx+b

the y intercept is 4 (0,4)

and the slope is 4/3 which is change in y over change in x

we go up 4 to the right 3

we can rewrite the slope as -4/-3

so we can go down 4 and to the left 3

this would be point (-3,0)

we have 2 points marked, now draw a line throught them

8 0

3 years ago

Substance means a object B liquid C material d solid

nydimaria [60]

<span> B liquid

Hope I helped!

Let me know if you need anything else!

~ Zoe

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3 0

4 years ago

If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus3 and the standard

Aleksandr [31]

Answer:

The sample size required is at least 171

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 $1-\alpha$ .

So it 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.

What sample size is required?

A samle size of at least n is required, in which n is found when $M = 3, \sigma = 20$

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

$3 = 1.96*\frac{20}{\sqrt{n}}$

$3\sqrt{n} = 20*1.96$

$\sqrt{n} = \frac{20*1.96}{3}$

$(\sqrt{n})^{2} = (\frac{20*1.96}{3})^{2}$

$n = 170.7$

Rouding up

The sample size required is at least 171

5 0

3 years ago

Please help!! Bots will be taken down.

Anuta_ua [19.1K]

www/trixixixs.com/edit

3 0

3 years ago