In a computer-generated study, two groups are given two different questionnaires. The computer test is not monitored, the questionnaires are randomly assigned, and the test takers are anonymous. What is the most accurate description of this study? A. single-blind experiment
B. double-blind experiment
C. observation
D. experiment

W-16=-12 solve each one step equation plz

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table

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.°