This is an incomplete question, but I found the complete question online.
Complete question:
Write the augmented matrix for each system of equations.
9x - 4y - 5z = 9
7x + 4y - 4z = -1
6x - 6y + z = -5
Answer:
![\left[\begin{array}{ccc}9&-4&-5|9\\7&4&-5|-1\\6&-6&1|-5\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D9%26-4%26-5%7C9%5C%5C7%264%26-5%7C-1%5C%5C6%26-6%261%7C-5%5Cend%7Barray%7D%5Cright%5D)
Answer:

Step-by-step explanation:
Let
and
.
The midpoint is calculated using the formula;

Substitute the coordinates to get;



Answer: look below :)
Step-by-step explanation:
5 < 11 < 42 < 2015
5 is less than 11 is less than 42 is less than 2015
5/
1
< 11/
1
< 42/
1
< 2015/
1
The first thing you do is to find the lowest common multiple of 5 and 7.What you do on the bottom, you must do on the top 25/35 / 28/35. The answer is 25/28. Sara ran 25/28 of the total distance around the track.