14. Quadrilateral ABCD has vertices at A(-4,2), B(-1,6), C(7,0), and D(4, - 4). Use of the accompanying grid is optional
(a) Find the midpoint of each of ABCD's diagonals, i. e. AC
and BD. What kind of special quadrilateral can we
conclude ABCD is based on this information? [3 points)
(b) Find the slope of AB and the slope of BC What kind of special quadrilateral can we conclude ABCD is
based on this information and what we found in (a)? [3 points)

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

What is the location of maximum over the interval [-3,1.5] for the graphed function?

Ms.lopez has 4 liters of chemicals that she is going to pour into beakers. each beaker will have 1/4 of a liter of chemicals, how many beakers can ms.lopez fill? draw a model to support your work. (it's ok if you dont)