Which system of equations has only one solution?
4x + 2y = 8
-4x-2y=3
–5x+y=B
5%-y--B
-3x+4y=2
3x - 4y=0
2x+4y - B
ax-Ay-a

For the inequality |c| < |d| to be true, which of the following must be true?

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?

The plant were you work has a cylindrical oil tank that is 2.5 feet across on the inside and 10 feet high. the depth of the oil in the tank is 2 feet. about how many gallons of oil are in the tank?