Which lines best approximate the directrices of the ellipse?

Round to the nearest tenth.

x= -4.6 and x = 4.6

x= -3.5 and x = 3.5

y = -4.6 and y = 4.6

y=-3.5 and y = 3.5

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

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?

What is coefficient of the term of degree of degree 5 in the polynomial below