IF `a^2+b^2=z` and ab=y, which of the following is equivalent to 4z+8y?

In the figure above, 2x = y. Which of the following is equivalent to z?

y^(2)-8y+2 Which of the following is equivalent to the expression above?

Using matrices, solve the following system of equations for x,y and z. 3x-2y+3z=8 , 2x+y-z=1 , 4x-3y+2z=4

Using matrices, solve the following system of equations for x,y and z: 3x-2y+3z=8,2x+y-z=1,4x-3y+2z=4

If x =a, y=b, z=c is a solution of the system of linear equations x + 8y + 7z =0, 9 x + 2y + 3z =0, x + y+z=0 such that point (a,b,c ) lies on the plane x + 2y + z=6, then 2a+ b+c equals

If x =a, y=b, z=c is a solution of the system of linear equations x + 8y + 7z =0, 9 x + 2y + 3z =0, x + y+z=0 such that point (a,b,c ) lies on the plane x + 2y + z=6, then 2a+ b+c equals

If x=a,y=b,z=c is a solution of the system of linear equations x+8y+7z=0,9x+2y+3z=0,x+y+z=0 such that the point (a,b,c) lies on the plane x+2y+z=6, then 2a+b+c equal to

Which of the following equations are consistent? If consistent, find their solutions. {:(x - 3y - 8z = -10),(3x + y - 4z = 0),(2x + 5y + 6z = 13):}