PLEASE HELP Mrs. Felley has 64 student. 3/4 of her students made an A on their exam. How many of Mrs. Kelley's students made an A on their exam. How many of Mrs. Kelley's students made an A on their exam.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

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.°