- How many 9inch square tiles are needed to cover the floor of a 12' x 18' rectangular room?

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Was slavery an integral part of the US economy? When P(x) is divided by (x+1), the remainder is 3. What is the remainder when xP(x) is divided by (x+1)? What is the volume in L of 9.21 g sample of oxygen gas at 40.7 degree C that exerts 886.7 mmHg of pressure ? Find three consecutive even integers such as the sum of the least integer and the middle integer is 40 more than the greatest integer. ? A gas has a volume of 645 mL at 67.9 °C. What is the final temperature in °C if the volume changes to 459 mL?