400×10=4000
400×2=800
50×10=500
50×2=100
2×10=20
2×2=4
4000+800+500+100+20+4=5,424
Check answer by multiplying 452 and 12
452×12=5,424
Answer:
15/7
Step-by-step explanation:
Kx-3y=k
y=4x+1 ( we will put it in 1st equation )
kx - 3 (4x+1)=k
kx - 12 x - 3 =k
kx - 12 x = k+3
x(k-12) = k+3
x=

Also y=

We can not divide with zero.
k-12=0
k=12For k= 12 equations have no solutions.
Answer:
18
Step-by-step explanation:
3×4(x)/2
Plug in 3 to x
3×4(3)/2
3×12/2
36/2
18
Answer:
u = 3
Step-by-step explanation:

I hope I've helped you.