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What day will it be exactly 6 months from June 14th, 2017? Best answer gets buncha stars? 7^(x+1) + 7^x + 7^(x-1) = 399, what is x? When the pressure that a gas exerts on a sealed container changes from -atm to 1.80 atm, the temperature changes from 86.0 C to 30.0 C.? 15.00g of Si reacts with 25.00g of F2 to produce 28.67g of SiF4. Which reactant is the limiting reagent? If x^2+y^2 = 6, and x+y=3, then what is x^3+y^3?