BR Company has a contribution margin of 18%. Sales are $423,000, net operating income is $76,140, and average operating assets are $131,000. What is the company's return on investment (ROI)

58.12%

Explanation:

Return on investment = Net operating income / Average operating assets

Return on investment = $76,140 / $131,000

Return on investment = 0.5812214

Return on investment = 58.12%

So, the company's return on investment (ROI) is 58.12%.

bd = 9 cm

step-by-step explanation:

in a 30°-60°-90° triangle, the ratio of side lengths is 1 : √3 : 2. that is, the longest side (hypotenuse) is twice the length of the shortest side.

all of the triangles in your geometry are 30°-60°-90° triangles. ac is the hypotenuse of δacd, and the short side of δabc.

the short side ad of δacd will be half the length of ac, so 3 cm. the hypotenuse ab of δabc will be twice the length of ac, so 12 cm. segment bd is the difference of the lengths ab and ad, so is

bd = ab -ad

bd = 12 cm - 3 cm = 9 cm

comment on side length ratios

you can figure the ratios of side lengths in a 30°-60°-90° triangle by considering the trig ratios of the angles. or you can figure the length of the altitude of an equilateral triangle of side length 2 using the pythagorean theorem.