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

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Hydrogen gas occupies a volume of 400 mL at 27˚C. Find the volume it will occupy if temp is increased to 57˚C? (Pressure is kept constant.)? Explain how policymaking processes might make it difficult for the public to monitor
and evaluate the House.? Determine, to the nearest tenth of an acre, the number of acres in a triangular parcel of land whose sides are 1,507, 1750, and 970 feet.? Determine the freezing point of an aqueous solution of 21.5g SrCl2 dissolved in 500ml of water.? So I built a sled jump and some little gremlins destroyed it so I wanna make another one that will be harder to destroy. Any advice?