The matrix that represents this system takes the x coordinates and puts them in a column and then the y coordinates and puts them in a column and then the solutions in another. Like this: ![\left[\begin{array}{ccc}7&8\\-3&9\\\end{array}\right] =\left[\begin{array}{ccc}28\\-24\end{array}\right]](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%268%5C%5C-3%269%5C%5C%5Cend%7Barray%7D%5Cright%5D%20%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D28%5C%5C-24%5Cend%7Barray%7D%5Cright%5D%20%20)
. That's what your matrix would look like.
Answer:
Step-by-step explanation:
5(x+12)=95 (multiply 5 in the brackets)
5x+60=95 (subtract 60 on both sides)
5x=35 (divide 5)
x=7
Answer:
B Step 2
Step-by-step explanation:
5(-3) should be -15, not positive 15
I would say 504 basing it off of converting 2/3 into 4/6 and used sets of 84 to each be 1/6
