Answer:
x = 0, y = -2
Step-by-step explanation:
-3x - 4y = 8 (1)
-4x - 3y=6 (2)
Multiply (1) by -4 and (2) by -3, we have:
12x + 16y = - 32 (3)
12x + 9y= -18 (4)
Subtract (4) from (3), we have:
(12x + 16y) - (12x + 9y) = - 32 - (-18)
<=> 7y = - 14
=> y = - 2
Replace y with - 2 in (3), we have x = 0
Answer:
D
Step-by-step explanation:
Answer:
i think u should first givr her discount by doing 20/100×3500=700 and than he will get 5 percent profit than here
3500-700=2800
now for 5 % profit
5/100*2800=140
hence
20% discount=700
5% profit =140
it might be wrong but here u go
Do u have a picture or something I could look at because I don't understand the second part
