Two numbers have a sum of 30. Half of their difference is 7. Find the numbers.

What is the solution to the equation in the & show work i’m very

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2