Question Bapco Runs a number of petrol stations around Bahrain, they want to find out the average liters of petrol used by cars.
A sample of 20 cars were surveyed, on average 51.81 liters was pumped per car with a standard deviation of 3.49
Find only the upper limit of the confidence interval with 95% confidence interval.​

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

10x − 5y + 14 = 0 whats the answer pls