Answer:
23x = -115
Step-by-step explanation:
In the substitution method, you must solve for 1 variable in 1 equation to replace it in the other equation. For the system:
2x - 7y = 4
3x + y = -17
Solving for y in the second equation:
y = -17 - 3x
Replacing y in the first equation:
2x - 7(-17 - 3x) = 4
2x + 119 + 21x = 4
23x = -115
This is the new equation after use the substitution method.
X/6.2=-2.1
multiply both sides by 6.2
x=-13.02
1. C
2. B
Good luck with the rest
Yes, they all have 4 corners.
Answer:
B
Step-by-step explanation: divide 520 by 8 and you get 65
