School buses in the terminal at 12 noon bus 86 takes 45 minutes to complete it is routine bus 79 takes 60 minutes when is the next time the school buses will I arrive to get her at the terminal if they are on time

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.°

Factor the polynomial expression x6 – x3 – 20

20 ! brainliest ! add and simplify your answer.