The sum of the external angles of a parallelogram is different from the sum of the external angles of a triangle. is the sum of the external angles of a parallelogram different from the sum of the external angles of a triangle?

What is the relationship between all triangles that can be drawn given the same three angles

How can you use synthetic substitution to tell whether a given binomial is a factor of a polynomial?

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