- 95 dBA at 10 feet, what is the sound pressure level at 320 feet?

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If (1/x)+(2/y)+(3/z)=1, then z=(axy/bxy-2x-cy), where a,b, and c are positive integers. Find the value of a+b+c.? Find an equation for the plane that contains the line v = (−1, 1, 2) + t(8, 2, 6) and is perpendicular to the plane 5x + 2y − 3z + 3 = 0.? What are the odds of correctly guessing 6 random numbers out of 40? Calculate ΔE, if a system releases 66.9 kJ of heat to its surroundings while the surroundings do 44.0 kJ of work on the system.? How ruler describe me?