Frame 1
frame 2
select all the ways the rectangle could have been rotated to get from frame 1 to frame 2:
a. 40 degrees clockwise
b. 40 degrees counterclockwise
c. 90 degrees clockwise
d. 90 degrees counterclockwise
e. 140 degrees clockwise
f. 140 degrees counterclockwise

If eh = hg and hg=16, find the diameter of k

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle

Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias