Answer:
Commutative Property of Multiplication.
<h3>
Answer: angle 1 (choice A)</h3>
This is because angles 1 and 4 are vertical angles. Such angles form whenever we have an X shape like this. Vertical angles are always opposite one another and they are always the same measure. The fact that lines k and l are parallel has no relevance (so they could easily be not parallel and the two angles mentioned are still congruent).
Well when there is a minus sign and a parenthesis and another minus sign after it it makes a plus sign so all you have to do is 2+5 and the answer is 7
Answer:
![\left[\begin{array}{ccc}2&1&3\\1&2&2\\2&3&1\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%261%263%5C%5C1%262%262%5C%5C2%263%261%5Cend%7Barray%7D%5Cright%5D)
![\left[\begin{array}{c}b&y&r\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7Db%26y%26r%5Cend%7Barray%7D%5Cright%5D)
![= \left[\begin{array}{c}1500&1225&1200\end{array}\right]](https://tex.z-dn.net/?f=%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D1500%261225%261200%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
Given
Required
Represent as a matrix
For Sammy:
So, we have:
For Jamie:
So, we have:
For Yvonne:
So, we have:
The system of equations are:
To represent as a matrix, we have:
![\left[\begin{array}{ccc}b_1&y_1&r_1\\b_2&y_2&r_2\\b_3&y_3&r_3\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7Db_1%26y_1%26r_1%5C%5Cb_2%26y_2%26r_2%5C%5Cb_3%26y_3%26r_3%5Cend%7Barray%7D%5Cright%5D)
![= \left[\begin{array}{c}Total_1&Total_2&Total_3\end{array}\right]](https://tex.z-dn.net/?f=%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7DTotal_1%26Total_2%26Total_3%5Cend%7Barray%7D%5Cright%5D)
This gives:
