4. Given B = 2 1 1 3 2 1
2 1 2

(a) Find the determinant, minor, cofactor and adjoint of matrix B.

(b) Find B-'. Hence solve the following simultaneous equations. 2x + y + 2 = 20 3x +2y + = = 14 2x + y +2= =12​

Chamberlin wants to bottle 1\8 of her apple cider. she pours the apple cider evenly among 6 bottles. what fraction of her apple cider will she put in each bottle? what expression could represent this situation?

In which form is the following function written? y = - 2(x – 3)(x + 5)

Solve the equation by completing the square. x^2+2x=17