Alice has two pieces of strings each one is 8 inches long. how many inches of string does she have together

Which is an equation for the nth terms of the sequence 12,15,18,21

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Use the given degree of confidence and sample data to construct a confidence interval for the population mean mu . assume that the population has a normal distribution. a laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 185 milligrams with sequals 17.6 milligrams. a confidence interval of 173.8 mgless than muless than 196.2 mg is constructed for the true mean cholesterol content of all such eggs. it was assumed that the population has a normal distribution. what confidence level does this interval represent?