Questions asked by The Lonely Donut

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What is the value of $y$ $y$ in $\frac{sin 99}{5 y - 18} = \frac{sin 49}{3 y + 2.7}$ $sin99/(5y-18) = sin49/(3y+2.7)$ ?
If a circle is circumcribed about a polygon, then the polygon is an...?
Out of the gases He, Ne, Kr, and Xe, which one is least likely to obey the ideal gas laws at very high pressures and very low temperatures and why?
How do you expand the logarithmic expression $ln (\frac{x}{3} y)$ $ln (x/3y)$ ?
What is the percent solution if 25mL of $C H_{3} O H$ $CH_"3"OH$ is DILUTED WITH 150mL with water?