Pure acid is to be added to a 20% acid solution to obtain 24 l of a 50% acid solution what amounts of each should be used

The spotter on the ground is standing beneath the safety net. what is his distance from the base of the platform, to the nearest meter? 3 meters, 2 meters, 4 meters, 1 meter?

On a architect's drawing of a house, 1 inche representa 1.5

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.