Answer:
(-2,-4)
Step-by-step explanation:
The given system is
![x+y=-6\\x-y=2](https://tex.z-dn.net/?f=x%2By%3D-6%5C%5Cx-y%3D2)
Add both equations to eliminate y
![x+x=-6+2](https://tex.z-dn.net/?f=x%2Bx%3D-6%2B2)
Simplify both sides to get:
![2x=-4](https://tex.z-dn.net/?f=2x%3D-4)
Divide both sides by 2
![x=\frac{-4}{2}\\ x=-2](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-4%7D%7B2%7D%5C%5C%20x%3D-2)
Put x=-2 into one of the equations say, x+y=-6 and solve for y
![y+-2=-6\\y=-6+2\\y=-4](https://tex.z-dn.net/?f=y%2B-2%3D-6%5C%5Cy%3D-6%2B2%5C%5Cy%3D-4)
The solution is (-2,-4)
72 people stayed, because 96 ÷ 4 = 24, and 24 * 3 is 72.
Answer:
If she wants to run 16 more miles in four days (30 miles minus already done 14 miles) she can run 4 miles a day for the next four days. 4 miles a day.
Step-by-step explanation:
Any second part or anything else to look at?