What's the area of a triangle with sides measuring 6.3 m and 2.9 m and 10.5 m

Which function has the same domain as y=2x

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

Which table represents a linear function? i'll give brainliest to first answer ^'^