Use row reduction to solve the system of equations.

Step-by-step explanation:

The given systems of equations is

The augmented matrix is

.

We perform the following row operations to reduce the matrix to reduced row echelon form using row 1 as our pivot row.

Next, we perform the following row operations using row 2 as our pivot row to obtain,

Next, we perform the following row operations using row 3 as our pivot row to get,

The matrix is now in the reduced row echelon form,

Therefore the solution is,

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

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.