Astudy of five hundred adults found that the number of hours they spend on social networking sites each week is normally distributed with a mean of 14 hours. the population standard deviation is 3 hours. what is the margin of error for a 95% confidence interval?

How is working backward similar to solving an equation?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)