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daser333 [38]
3 years ago
7

Please help :(

Mathematics
1 answer:
fredd [130]3 years ago
7 0

Answer:

3.4 nearest tenth

Step-by-step explanation:

Standard Deviation, σ: 3.4399612400917

Count, N: 12

Sum, Σx: 144

Mean, μ: 12

Variance, σ2:  11.833333333333

Steps

σ2 =  Σ(xi - μ)2

N

=  

(14 - 12)2 + ... + (10 - 12)2

12

=  

142

12

=  11.833333333333

σ =  √11.833333333333

=  3.4399612400917

Hope this helps ya!

Sorry this didn't have the symbols I needed so that's why it's a little confusing.

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13. How many distinct 4-letter groupings can be made with the letters from the word champion if letters may not be repeated?
ddd [48]

Answer:

N = 1680

Therefore, 1680 '4 letter groupings' can be formed from the word 'champion'

Step-by-step explanation:

Given the word 'champion' which is an 8 distinct Letter word. The number of 4 letter groupings that could be formed from it can be given by the permutation since in this case order of letters are important.

The number of distinct 4 letter groupings can be given as;

N = nPr = 8!/(8-4)!, where n= 8 and r = 4

N = 8P4 = 8!/(8-4)!

N= 8!/4!

N = 1680

Therefore, 1680 '4 letter groupings' can be formed from the word 'champion'

7 0
4 years ago
Can someone help me again please. I will pay extra fr please
fgiga [73]

Answer:

y = 3x + 3

Step-by-step explanation:

First, you check for the y-intercept, which is 3 for this equation.

In order to find the slope, pick two points and apply the slope formula.

I would just use rise/run. The slope should be 3/1.

3 0
3 years ago
Read 2 more answers
Please help me and only answer if ur 100% sure
beks73 [17]

Answer:

CONSIDER THE POINTS (1,4) and (2,7)

m =  \frac{y1 - y2}{x1 - x2}  \\

m=(7-4)/(2-1)

=3/1

m=3x

c=1

y=3x+1

the answer is option A

4 0
3 years ago
Read 2 more answers
What is<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B3%7D%20%20%5Ctimes%20%20-%2011%20%5C%5C%20" id="TexFormula1" ti
Ludmilka [50]
-22/3




................................

..
4 0
4 years ago
Please help I’m in an hour of need
dusya [7]

Answer:

x = 107 degrees

Step-by-step explanation:

A line is 180 degrees so first, find the other angle by doing 180 - 160 which gives you 20 degrees.

The angles of a triangle add up to 180 degrees, so do 180-53-20, which gives you 107 degrees as the value of x.

3 0
3 years ago
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