Please answer fast Which of the following groups of side lengths could form a right triangle?

A. 20 cm, 99 cm, 101 cm
B. 4 cm, 5 cm, 6 cm
C. 25 cm, 50 cm, 75 cm
D. 30 cm, 60 cm, 90 cm

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

What is the ordered pair of m’ after point m (5, 6) is rotated 90° counterclockwise?

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.°