Find the quotient: 8,441 ÷ 21 = . a. 400 r 12 b. 400 r 20 c. 401 r 12 d. 400 r 20

How can you tell when x and y are not directly proportional?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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.°