1. Classify each of the following into the components of U. S. GDP: consumption expenditure, investment, government purchases of goods and services, exports, or imports. Note any incident which would not be counted. A. A monthly check received by an economics student who has been granted a government grant B. A farmer's purchase of a new tractor investment C. An increase in business inventories D. A barber is paid by an executive for a shave and haircut E. A plumber's purchase of a two-year-old used truck F. A purchase of a new car from Germany G. A parts distributor builds a factory next to the Hyundai complex​

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.