How many gallons of a 40% acid solution must be added to a 30%
acid solution to make 50 gallons
that is a 36% acid solution?

What is this inequality notation? t is less then or equal to 2

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3