You will build a swimming pool in your house. It will be shaped like a cobblestone with 21,000 dm³ in volume, 100 cm high and 3.5 m wide. Determine how much material you will spend for the internal lining of your pool, knowing that the m² of floor costs R $ 50.00.

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Write the factored form of this trinomial 9x^2+18x-7