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2 years ago

10

Please help me with the question ...thank u!

1 answer:

LiRa [457]2 years ago

5 0

Answer:

7

Step-by-step explanation:

To solve this use the expression PEMDAS

So first we do what is in parenthesis

-10 + 6 = -4

Then . .

225 / 5 = 45 + -4 = 41

√41 = 6.4 rounded to the tenth

round to the nearest whole number = 7

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What is the difference between an observational study and an experiment

Blizzard [7]

Answer: In observational study observer has no control on the variables but in an experiment experimenter has control over the independent variable to record the change on the dependent variable.

Step-by-step explanation:

In statistics , an observational study is a study in which a researcher just observe effects on subjects in a certain manner without interfering them.

On the other hand an experiment is a process which is done by experimenter to demonstrate a known fact or create a discovery by applying some methods to the variables .

The basic difference between an observational study and an experiment is<em> in observational study observer has no control on the variables but in an experiment experimenter has control over the independent variable to record the change on the dependent variable.</em>

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3 years ago

When traveling to Europe, Bailey converts the temp. given in degrees Celsius to a Fahrenheit temp. by using the expression 9x ÷

lawyer [7]

9(15) / 5 + 32

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2 years ago

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A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below: 67.4

skad [1K]

Answer:

a) $\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

b) The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

Step-by-step explanation:

For this case we have the following dataset:

67.401, 67.400, 67.402, 67.396, 67.406, 67.401, 67.396, 67.401, 67.405, and 67.404

Part a: Determine the most probable value.

For this case the most probably value would be the sample mean given by this formula:

$\bar X =\frac{\sum_{i=1}^n X_i}{n}$

And if we replace we got:

$\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

Part b: Determine the standard deviation

The sample deviation is calculated from the following formula:

$s=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

$\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And then the deviation would be:

$\sigma =0.00319$

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3 years ago

2 is a only even prime number yes or no

balu736 [363]

Answer:

yes.<em> </em><em>2</em><em> </em><em>is</em><em> </em><em>an</em><em> </em><em>only</em><em> </em><em>even</em><em> </em><em>prime</em><em> </em><em>number</em><em>. </em>

Step-by-step explanation:

<em>Prime</em><em> </em><em>number</em><em> </em><em>means</em><em> </em><em>a</em><em> </em><em>number</em><em> </em><em>that</em><em> </em><em>can</em><em> </em><em>be</em><em> </em><em>exactly</em><em> </em><em>divisible</em><em> </em><em>by</em><em> </em><em>1</em><em> </em><em>and</em><em> </em><em>itself</em><em> </em><em>is</em><em> </em><em>called</em><em> </em><em>prime</em><em> </em><em>number</em><em>. </em>

<em>2</em><em> </em><em>is</em><em> </em><em>divisible</em><em> </em><em>by</em><em> </em><em>1</em><em> </em><em>and</em><em> </em><em>2</em>

<em>prime</em><em> </em><em>number</em><em> </em><em>has</em><em> </em><em>only</em><em> </em><em>two</em><em> </em><em>factors</em><em>. </em>

<em>FOR</em><em> </em><em>Example</em><em>:</em><em> </em><em>13</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>HAVE A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

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3 years ago

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Need help with all them, state how you know also<br><br> Triangle Congruency

nata0808 [166]

Answer

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Step-by-step explanation:

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