Microphone Explain how to form a linear combination to eliminate the variable y for this system,
2x - 3y 3
5x + 2y = 17.
A)
Multiply the first equation by 2 and the second equation by 3.
B)
Multiply the first equation by -5 and the second equation by -2.
Multiply the first equation by-2 and the second equation by 3.
D)
Multiply the first equation by 2 and the second equation by -3.

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?