Solve the system of equations by transforming a matrix representing the system of equation into reduced row echelon form. 2x+y−3z=−19
x+2y+z=−4
x−y+5z=21

What is the system of equations in reduced row echelon and solution to system of equations?

Problem one: x = -19/2 - y/2 + 3z/2

Problem two: x = -4 - 2y - z

Problem thee: x = 21 + y - 5z

Step-by-step explanation:

So what I did with all problems was Move all terms not containing x to the right side of the equation. To solve the systems of equations of each problem.

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m