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Lena [83]
3 years ago
6

What is the variance of the values 8,10,14,12?

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0
The mean of the numbers is 11 now all you have to do is take 11 and subtract it from the squared difference. 
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Your bill at a restaurant is $84.90. What will the tip be if you leave 20% for the server?*
nydimaria [60]

Answer:

$16.90

Step-by-step explanation:

20% of $84.80 is $16.90

3 0
3 years ago
Find the HCF of 140,210,315
AVprozaik [17]
(On the far left, it says 140 at the top and then 5 to the left of 28)
The answer is 35, let me know if you can't read anything or have any questions. Hope this helped :)

3 0
3 years ago
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What is the distance between the center of the circle with equation $x^2+y^2=6x-8y+24$ and the point $(-3,-12)$?
kvasek [131]

Answer:

The answer to your question is: 10 units

Step-by-step explanation:

P (-3, -12)

1.- Find the center of the circle

                               x² + y² = 6x - 8y + 24

                              x² - 6x + (   )²  + y² + 8y + (  )²  = 24

                              x² - 6x + (3)² + y² + 8y + (4)² = 24 + 9 + 16

                              (x - 3)² + (y + 4)² = 49

                              Center (3, -4)

2.- Find the distance between the center and the point given

Formula

d = \sqrt{(x2- x1)^{2} + (y2 - y1)^{2} }

Substitution

d = \sqrt{(-3 - 3)^{2} + (-12 +4)^{2} }

d = \sqrt{(-6)^{2} + (-8)^{2} }

d = \sqrt{36 + 64} }

d = \sqrt{100}

d = 10 units

             

3 0
3 years ago
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FrozenT [24]

13/3?

I think it is but so you put 13/3 into a proper fraction so 4 1/3

7 0
3 years ago
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Find the perimeter. Simplify your answer.<br> 6W+7<br> 8w-4<br> 3w+9
andrey2020 [161]

(3w + 9) + (6w + 7) + (8w - 4) =

= 3w + 9 + 6w + 7 + 8w - 4 =

= 3w + 6w + 8w + 9 + 7 - 4 = <u>1</u><u>7</u><u>w</u><u> </u><u>+</u><u> </u><u>1</u><u>2</u>

7 0
3 years ago
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