Elena works at least 4 hours but not more than 8 hours. the amount of money elena earns for working t hours is represented by a function.

In the 30-60-90 triangle below side s has a length of and side r has a length

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

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?