Solution:
1) Solve for x in 3x+7y=-1
x=\frac{-1-7y}{3}
2) Substitute x=\frac{-1-7y}{3} into 4x-3y=11
\frac{4(-1-7y)}{3}-3y=11
3) Solve for y in \frac{4(-1-7y)}{3}-3y=11
y=-1
4) Substitute y=-1 into x=\frac{-1-7y}{3}
x=2
5) Therefore,
x=2
y=-1
Done!
Answer:
c 70
Step-by-step explanation:
supplementary means they equal 180
180 - 110 = 70
Answer:
their night cost them $33.21
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
if we divide both sides of 6x + 9 = 12 by 3
(6x + 9)/3 = 12/3
2x + 3 = 4 ---> which matches choice B
1,4,9,16,25,36,...,n^2
since they all have rational square roots
3asy
