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3 years ago

699 x 39 whith steps pls

Mathematics

1 answer:

masha68 [24]3 years ago

7 0

Answer:

699*39=27261

Step-by-step explanation:

699*39

6 9 9

× 3 9

+ 6 2 9 1

+ 2 0 9 7

= 2 7 2 6 1

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Suppose that a jewelry store tracked the amount of emeralds they sold each week to more accurately estimate how many emeralds to

RUDIKE [14]

Answer:

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X$ represent the sample mean

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

And for this case the 95% confidence interval is given by (2.13; 2.37)

We have a point of estimate for the sample mean with this formula:

$\bar X = \frac{Upper+ Lower}{2}= \frac{3.37+2.13}{2}= 2.75$

And for the margin of error we have the following estimation:

$ME= \frac{Upper -Lower}{2}= \frac{3.37-2.13}{2}= 0.62$

5 0

3 years ago

PLEASE HELP!!!

DIA [1.3K]

You would need 27 more dollars because f(x)=7x+2 plug in the 5 in x’s spot and you get 37 and so subtract it from 10 to get 27

7 0

3 years ago

The first three terms of a sequence are given. Round to the nearest thousandth (if necessary). 8, 12,18 find the 6th term

Andreas93 [3]

Answer:

8 12 18 24 34 46

Step-by-step explanation:

its adding 2 to evrey one that changes

hope this helps :)

5 0

3 years ago

PLEASE HELP!!!!!!!<br> (do not answer if you do not know, so the points go to people who do know.)

zheka24 [161]

Answer:

1a = 8 cu. in.

1b = 48 cu. yd.

1c = 15 cu. ft.

2a. 36 cu. yd.

2b = 126 cu. ft.

2c = 90 cu. ft.

3a = 112 cu. in.

3b = 60 cu. yd.

3c = 189 cu. ft.

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

How many models of 100 do you need to model 3200 explain

rusak2 [61]

32 models need to make model of 3200.

Given that a 1 model contain 100.

Two series of numbers, usually empirical data, that are proportional or proportional if their respective elements are in constant proportion, called the scaling factor or the rate constant.

One model has 100 elements.

Now, we have to find how many model contains 3200 elements.

So, 1 model=100 elements

n model =3200 elements

We will write this in proportion as

1/n=100/3200

Applying the cross multiply, we get

3200×1=n×100

Divide both sides with 100, we get

3200/100=100n/100

3200/100=n

32=n

Hence, the 32 models contain 3200 elements when one contain 100 elements.

Learn more about proportional from here brainly.com/question/23536327

#SPJ9

4 0

2 years ago