Acleaning solution that is 40% nitric acid is being mixed with a solution that is 15% nitric acid in order to create 2 l of a solution that is 25% nitric acid. how much 40%-acid and how much 15%- acid should be used?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w