How do i solve for question 18 and what is the answer? asap❤️

Abcd is a parallelogram. the diagram is not drawn to scale. if m

What is the result of adding the system of equations? 2x+y=4 3x-y=6

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?