4 years ago

Please help! 15 points!!

Mathematics

2 answers:

solmaris [256]4 years ago

7 0

I'm not sure if it's right, but I think the answer is 648.

nlexa [21]4 years ago

4 0

Answer 648 :)))))))))))))

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goldfiish [28.3K]

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3 years ago

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Eleven diminished by 5 times a number is the same as 4 times the number increased by 20.

Bas_tet [7]

$x-number\\\\
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3 years ago

If the standard deviation of a set of data is zero, what can you conclude about the set of values? The sum of the deviations fro

Rashid [163]

Answer:

All values are identical.

Step-by-step explanation:

We are given the following in the question:

If the standard deviation of a set of data is zero.

Then, all the values in data are identical.

This can be shown as:

Let all the terms in data be x.

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{nx}{n} = x$

Sum of squares of differences =

$\displaystyle\sum (x_i - x)^2 = 0$

$\sigma = \sqrt{\frac{0}{n}} = 0$

Thus, the correct answer is

All values are identical.

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4 years ago

So it’s the angle sun theory but i don’t understand it at all

DedPeter [7]

ANSWER

$30\degree$

EXPLANATION

The angle sum theory states that:

This implies that:

$x+x+60+60=180$

Solve for x in the equation above:

$\begin{gathered} 2x+120=180 \\ \Rightarrow2x=180-120=60 \\ x=\frac{60}{2} \\ x=30\degree \end{gathered}$

That is the value of x.

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1 year ago

PLEASE HELP QUICKLY

andreev551 [17]

Answer:

He ran one mile in 20 minutes

Step-by-step explanation:

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4 years ago