Answer:
![\large\boxed{\left[\begin{array}{ccc}10&-30\\-10&-2\end{array}\right]}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D10%26-30%5C%5C-10%26-2%5Cend%7Barray%7D%5Cright%5D%7D)
Step-by-step explanation:
![X-3\left[\begin{array}{ccc}2&-8\\-4&2\end{array}\right] =\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]\\\\X-\left[\begin{array}{ccc}(3)(2)&(3)(-8)\\(3)(-4)&(3)(2)\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]\\\\X-\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]](https://tex.z-dn.net/?f=X-3%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26-8%5C%5C-4%262%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26-6%5C%5C2%26-8%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5CX-%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%283%29%282%29%26%283%29%28-8%29%5C%5C%283%29%28-4%29%26%283%29%282%29%5Cend%7Barray%7D%5Cright%5D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26-6%5C%5C2%26-8%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5CX-%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26-24%5C%5C-12%266%5Cend%7Barray%7D%5Cright%5D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26-6%5C%5C2%26-8%5Cend%7Barray%7D%5Cright%5D)
![X-\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]+\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]=\left[\begin{array}{ccc}4&-6\\2&-8\end{array}\right]+\left[\begin{array}{ccc}6&-24\\-12&6\end{array}\right]\\\\X=\left[\begin{array}{ccc}4+6&(-6)+(-24)\\2+(-12)&-8+6\end{array}\right]\\\\X=\left[\begin{array}{ccc}10&-30\\-10&-2\end{array}\right]](https://tex.z-dn.net/?f=X-%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26-24%5C%5C-12%266%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26-24%5C%5C-12%266%5Cend%7Barray%7D%5Cright%5D%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26-6%5C%5C2%26-8%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26-24%5C%5C-12%266%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5CX%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%2B6%26%28-6%29%2B%28-24%29%5C%5C2%2B%28-12%29%26-8%2B6%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5CX%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D10%26-30%5C%5C-10%26-2%5Cend%7Barray%7D%5Cright%5D)
Answer:
11.25 miles
Step-by-step explanation:
If you divide 6.75 by 1.5 then you would get that he walks 4.5 miles an hour. Then you would multiply 4.5 by 2.5 to get that he walks 11.25 miles in 2.5 hours.
Answer:
(4,4)
Step-by-step explanation:
hope this help
Answer:
the third one
Step-by-step explanation:
5. Yes 1,2, or 3 hours
6. No, because the distance will never change and there aren't multiple values
7. Yes, yes or no (a person could be colorblind)
8. Yes, yes or no (a person could be colorblind)
9. Yes: Rap, country, pop, classical, etc
