Eliminate z from equation 2 and 3: subtract ③ from ②: 2x+y=-1 and call this ④.
Double ①: 4x+4y+2z=-10 and call it ⑤.
⑤-②: x=-10.
Substitute x=-10 in ④: -20+y=-1, y=19.
Substitute for x and y in ①: -20+38+z=-5, z=-23.
Solution: x=-10, y=19, z=-23.
Answer: C
Step-by-step explanation:
The x times 4 equals the y in each column.
I think that it would be a
Mary used 8 apples!!
24 divided into 6 is 4, then you times that by 2
Answer:
2
Step-by-step explanation:
It's 2 because 4^2 is 8 and 1^2 is 2 so that's how I got my answer