342225 square root by division method pls give the steps

Three coins are flipped. what is the probability that there will be at least two tails?

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Asinusoidal function whose frequency is 1/6pi