- X2 + x + 4 = 0 using quadratic formula?

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What mass of CH4 is contained in a 461 mL sample of CH4 at −59◦C and 330 torr? Answer in units of g.? Are the motion of galaxies relative to the same radius to the gravity center of mass of the Physical Universe with same frequency? Let a = the length of a car in meters. Let b = the length of the same car in centimeters.
Which number is greater, a or b?
Use the drop-down? What percent of $13424 is $4714? Convert r^2(cos^2theta/9 +sin^2theta/9)=1 into rectangular form?