In ΔOPQ, o = 9.4 inches, p = 3.1 inches and q=7.3 inches. Find the measure of ∠Q to the nearest 10th of a degree.

The mean temperature for the first 4 days in january was 7°c. the mean temperature for the first 5 days in january was 5°c. what was the temperature on the 5th day?

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?