All of the following are reasons the AD curve is down sloping except when prices rise in an economy, the real value of household income declines causing decreased consumer spending. when prices rise in an economy, more households seek loans, decreasing investment and consumer spending as interest rates rise. when prices rise in an economy, consumers tend to buy cheaper foreign products and fewer domestic products resulting in a decrease in net exports. when prices rise in an economy, consumers tend to spend more on domestic goods. when prices rise in an economy, consumers tend to spend less on domestic goods.

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.

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