Suppose the angle of elevation from a ship to the top of a lighthouse on top of a cliff is 5º. The
lighthouse is 70 ft tall and the cliff is 150 ft high. Find the distance from the ship to the base of the
cliff.

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

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