Tara works out on the treadmill for half an hour. She runs at 8 miles/hour for x hours, jogs at 6 miles/hour for y hours, and walks at 4 miles/hour for z hours. The total distance that she runs, walks, and jogs is . If she walks for as long as she runs and jogs combined, which system of equations represents this situation?

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.°