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shusha [124]
3 years ago
15

The ___ is the average of the sum of the squared differences of the mean from each

Mathematics
1 answer:
spayn [35]3 years ago
7 0

Answer:

A. variance

Step-by-step explanation:

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Solve the following equation for n.<br> n+18=m
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n=m-18. Please Please Please Mark it as brainlist answer. Please I request to Mark it as brainlist answer..

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2 years ago
Money Neil has a total of twelve $5 and $10 bills in his wallet. He has 5 times as many $10 bills as $5 dollar bills. How many o
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He has 2 $5 bills and 10 $10 bills

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Step-by-step explanation:

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3 years ago
Help please!!!!!!!!!
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ANSWER

24


EXPLANATION

For a matrix A of order n×n, the cofactor C_{ij} of element a_{ij} is defined to be


   C_{ij} = (-1)^{i+j} M_{ij}


M_{ij} is the minor of element a_{ij} equal to the determinant of the matrix we get by taking matrix A and deleting row i and column j.


Here, we have


   C_{11} = (-1)^{1+1} M_{11} = M_{11}


M₁₁ is the determinant of the matrix that is matrix A with row 1 and column 1 removed. The bold entries are the row and the column we delete.


   \begin{aligned} A=\begin{bmatrix} \bf 1 & \bf -6 & \bf -4\\ \bf 7 & 0 & -3 \\ \bf -9 & 8 & -8 \end{bmatrix} \implies M_{11} &= \text{det}\left(\begin{bmatrix} 0&-3 \\ 8&-8 \end{bmatrix} \right)  \end{aligned}


Since the determinant of a 2×2 matrix is


   \det\left(  \begin{bmatrix} a & b \\ c& d  \end{bmatrix} \right) = ad-bc


it follows that


   \begin{aligned} A=\begin{bmatrix} \bf 1 & \bf -6 & \bf -4\\ \bf 7 & 0 & -3 \\ \bf -9 & 8 & -8 \end{bmatrix} \implies M_{11} &= \text{det}\left(\begin{bmatrix} 0&-3 \\ 8&-8 \end{bmatrix} \right) \\ &= (0)(-8) - (-3)(8) \\ &= -(-24) \\ &= 24 \end{aligned}


so C_{11} = M_{11} = 24

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3 years ago
1.) A. Graph A
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1) To emphasize the slow increase in profits, it would be best for Bradley to use <u>Graph A</u> for his presentation.

2) Bradley should use this graph for his presentation becauase the profit <u>appears to increase less</u> on this graph.


6 0
3 years ago
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