Could someone help me solve these problems, step by step please so that I can understand what to do! Please only Answer with real solutions. The best answer will get Brainliest

What is the measure of the smallest angle in the diagram? 15 29 32 45

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

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.