Many magazine companies are dropping the title of from their publications as evidence of the importance of digital publishing to their business.

The correct answer is publisher.

Explanation:

The concept of editor includes that person or company, such as an editorial, which is dedicated to editing works or other publications, such is the case of journalistic, among the most recurrent, the publication of books and magazines.

This task constitutes a very important industry in almost all the countries of the world and has a very relevant cultural function, since in addition to of course being an economic business for those who participate directly in it, authors, publishers, sellers, through it The information is set in motion so that it reaches the interested public and in this way it can know more or educate itself about a certain science or topic.

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.

choices : )

explanation: