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Lyrx [107]
3 years ago
8

whats 9+10?idk i cant seem to figure it out heeeeeeeeeeeeeeeeeeeeeeeeeeeelp me pleeeeeeeeeeeeeeeese. it the most hard math probe

lm now to man kind!
Mathematics
2 answers:
KonstantinChe [14]3 years ago
7 0
You cant fool me! Its either 19 or 21 
tester [92]3 years ago
4 0
I just have to guess ... 19 lol
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Find the value of this expression<br> x^2-1 /x+4
frosja888 [35]

Answer:

-16

Step-by-step explanation:

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3 years ago
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What is the measure of C?
Rufina [12.5K]
Since the shape is a quadrilateral, the interior angles add to 360 degrees. Thus, angle C is 360 - 82 - 92 - 102 = 84 degrees.
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3 years ago
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What is the mean absolute deviation of 42 31 1 1 2 4 5 6 7 3
FromTheMoon [43]

The mean absolute deviation is 10.52.

<h3>What is the mean absolute deviation?</h3>

The mean absolute deviation of a dataset is the average distance between each data point and the mean. It is a measure of variation of a data set.

MAD =1/n  ∑ l x - m(x) l

Where:

n = total numbers in the data set

x = number

m(x) - median

The first step is to determine the mean of the data set: (42 + 31 + 1 + 1 + 2 4+ 5 + 6 + 7 + 3) / 10 = 10.2

Find the absolute value of the difference between the number and the mean. Add the result | (42 - 10.2) + (31 - 10.2) + (1 _ 10.2)  + (1 - 10.2)  + (2 - 10.2)  + (4 - 10.2)  + (5 - 10.2)  + (6 - 10.2)  + (7 - 10.2)  + (3 - 10.2) = 105.2

Divide the sum by the total number in the dataset = 105.2 / 10 = 10.52

To learn more about mean absolute deviation, please check: brainly.com/question/27365177

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5 0
1 year ago
Use an inverse matrix to solve for the system of equations.
IrinaK [193]

Answer:

(-1, 7, 2)

Step-by-step explanation:

we suppose that ax + by + cz = d for the matrix

D = det [ 0    4     7] = 100

              -6   0    -2

               1    2     8

Dx= det [ 14    4     7] = - 100

               10   0    -2

               -3    2     8

Dy= det [ 0    14    7] = 700

               -6   10    -2

                1    -3    8

Dz = det [ 0    4    14] = 200

               -6   0     10

                1    2     -3

So the solution is:

x = Dx/D = -1, y = Dy/D= 7, z =Dz/D = 2

(-1, 7, 2)

have a good day!

4 0
3 years ago
Solve (x - 4)^2 = 5
Degger [83]
The answer should be C.


Hope this helps
3 0
3 years ago
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