Suppose that x1=-1, x2=2, x3=4, x4=-3 is a solution of a non-homogeneous linear system ax = b and that the solution set of the homogeneous system ax=0 is given by the formulas: x1= -3r +4s, x2=r-s, x3=r, x3=sa) find the vector form of the general solution of ax=bb) find the vector form of the general solution ax=0

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle. what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle. what is the measure of angle a? enter your answer in the box. m∠a= 3.)quadrilateral abcd is inscribed in this circle. what is the measure of angle b? enter your answer in the box. m∠b= °4.)quadrilateral abcd is inscribed in this circle. what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle. what is the measure of angle c? enter your answer in the box.°