What is 2+2= my cousin that is 3 wants to know i will not answer him so what is !

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

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?

Which expression can be used to find the cost of .75 kilogram of cheese at the price of $6.40 per kilogram?