Attina always spends 30 % of her income on soft-shell crabs. assume that her income increases by some percentage while the price of soft-shell crabs remains constant (and that all soft-shell crabs cost the same). what is her income elasticity of demand for soft-shell crabs?

Unit elastic.

Explanation:

Income elasticity of demand refers to the responsiveness of a quantity demanded for a good with a change in the income level of a consumer.

Here, it was given that price of the soft shell remains the same, irrespective of the change in the income level of an individual. In this case, the income elasticity of demand for soft-shell crabs is unitary elastic which means that percentage change in quantity demanded is identical as the percentage change in income level of a consumer.

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.

his average speed in km per hour is ≈ 55.4 km/h and about 15.4 m/s.