Which of the following expressions is a common factor when the expressions x2 – 9 and x2 – 5x + 6 are factored?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

What is the measure of angle x? a.101 b.158 c.44 d.79

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