Temperature is 30 C relative humidity is 90 percent, what is the percentage of oxygen by volume in the air

The sum of two numbers is 12 and their difference is 18 what are the two numbers

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3