Jackie is performing the following construction Based on the markings that are presentwhat construction is she performing ? Bisecting an angle Bisecting a line segment Copying an angle Copying a segment

Pls , the question is in the picture!

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Given abcd ac=38 and ae=3x+4 find the value of x