5. Find the length of a side of an equilateral triangle when the perimeter is 57 cm. A. 28.5 cm
B. 171 cm
C. none of the listed answers
D. 19 cm

Find the slope of a line given the following two points

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

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?