The gold bar has a trapezium cross-sectional area. Gold has a density of 19.3 grams per cm cubed. Work out the mass of the gold bar. Give your answer in kg 5cm 6cm 12cm 16cm

Answer this question, only if you know the answer. 30 points and brainliest!

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

How can you tell when x and y are not directly proportional?