The manager of the Burning Desire candle store wants to understand the purchasing behaviors of her customers. Specifically, she wants to know how many customers who come to the store actually end up making a purchase. In addition, she wants to know what the average purchase price is when customers do make a purchase. She observes customers in the store for a random assortment of times over the course of 5 days, making a total of 20 hours of observation (i. e., 4 hours per day). During each of these hours of observation she counts the number of people who come into the store and notes whether or not they make a purchase. If they do make a purchase, she records the amount they spend. In all, she observes 440 people.

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; manager working long hours; plz check i believe this is correct good luck;