In a recent study to establish the effectiveness of a new cancer drug, subjects were divided into three groups. Group A got a known and effective cancer drug, group B got the new experimental compound, and group C got a combination of the two drugs. In this study the nurses administering the drugs did not know which group or what drug was being administered to their patients. Which of the following is a correct statement about this study?

A. It was a blind study because subjects did not know the treatment they were receiving.

B. It was a double-blind study because neither the subject nor the experimenter knew what the treatment for a patient was.

C. It was not a blind study because there was no placebo.

D. It was not a blind study because patients knew they were participating in a study.

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation: