During the new york celebration there are orange, green, purple and blue fireworks. in how many different orders can the different colors of fireworks appear?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

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

Write the pair of fractions as a pair of fractions with a common denominator