Winnie used her calculator to calculate the square root of a number. She then found

the square root of the number displayed.

The calculator then showed 3. What

number did Winnie first enter into her

calculator? Explain your reasoning.

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

Evaluate cos2θ for cosθ = square root of 3/2

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.