Last year a company had sales of $500,000, operating costs of $375,000, and year-end assets of $300,000. the debt-to-total-assets ratio was 30%, the interest rate on the debt was 5%, and the tax rate was 25%. the new cfo wants to see how the roe would have been affected if the firm had used a 40% debt ratio. assume that sales and total assets would not be affected, and that the interest rate and tax rate would both remain constant. how much would the roe change in terms of percentage points in response to the change in the capital structure?

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

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.)

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit