In El Salvador, a manufacturer of household insecticide told Dempko Chemical Company's salesperson Nelson Viquez that it wanted a substitute for the kerosene it always used in making aerosol household insecticide. Viquez worked extensively with the manufacturer to create a pilot plant and test its pesticides with the addition of Dempko Chemical's Demosol Dâ€"a substitute for kerosene. Dempko Chemical and the manufacturer spent a year and a half running laboratory and field tests on the new product, which was extremely successful in Central America. Viquez acted as a(n):.a. spotter. b. gatekeeper. c. change agent. d. idea champion. e. influential adversary.

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.

answer; i believe the correct answer is energy star;

1. c

2. b

3. a

4. c

5. a

6. b

7. c

8. c

9.b

10. d

just took it 100%