Y=5x+2
4x-y=0
is (2,12) a solution of the system?

No

Step-by-step explanation:

For a point to be a solution of a system of equations, it has to work for both equations in said system. For this particular point, it doesn't fit into both.

12=5(2)+2

12=10+2

12=12

4(2)-12=0

8-12=0

-4=0

The second equation doesn't work out.

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.