Answer:B
Step-by-step explanation:
7x+2y=3 | ×3
x-3y=30 | ×2
21x + 6y = 9
2x - 6y = 60 +
--------------------------
23x / = 69
x = 69:23
x = 3
7x + 2y = 3
21 + 2y = 3
2y = -18
y = -9
Answer:
7/10
Step-by-step explanation:
87/10-x=8
80/10=8,
87/10-8-x=0
7/10=x
so the answer is 7/10
Answer: 169.52
Step-by-step explanation
%increase which is 5% =100 x final - initial
---------------------
initial
the initial is $169.52
and the final $178