The paper industry and brewery industry each emit 60 tons of particulates into the air. It costs the paper industry $1,000 to remove 1 ton of particulates, and it costs the brewery industry $1,400 to remove 1 ton of particulates. In an effort to reduce particulate pollution, the government gives each industry tradable allowances worth 50 tons of particulates. We would expect that: Select one: a. the brewery industry will buy tradable allowances from the paper industry at a cost greater than $1,400 per allowance
b. the brewery industry will buy tradable allowances from the paper industry at a cost between $1,000 and $1,400 per allowance.
c. the paper industry will buy tradable allowances from the brewery industry at a cost between 1,000 and $1,400 per allowance.
d. the paper industry will buy tradable allowances from the brewery industry at a cost greater than $1,400 per allowance

b. the brewery industry will buy tradable allowances from the paper industry at a cost between $1,000 and $1,400 per allowance.

Explanation:

This is the best one to select because, buying of the tradable allowance from the paper industry would be cheaper for the brewery industry. This would enable them to effectively remove more tons of the particulates thereby reducing the air pollution.

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.

im almost done gimme more time to get the answer