4) Suppose that when the price of hamburgers increases, the Ruiz family increases their purchases of hot dogs. To the Ruiz family A) hamburgers and hot dogs are complements. B) hamburgers and hot dogs are inferior goods. C) hamburgers and hot dogs are normal goods. D) hamburgers and hot dogs are substitutes.

D) hamburgers and hot dogs are substitutes.

Explanation:

Option A is incorrect. When the price of one good increases, the demand for other good decreases. It is called complementary goods. In this question, due to the increase in the price of hamburgers, the Ruiz family started taking hot dogs. Therefore, hot dogs price is not increasing. Therefore, it is a substitute good. Substitute goods state that the increase in the price of one good leads to the increase in demand for another good. Therefore, option D is correct.

Normal goods and inferior goods are related to income, so those are not answers.

females are

explanation:

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.