A community for students.
Here's the question you clicked on:
 0 viewing
mathsucksalot123
 4 years ago
Rock music accounted for 30.5% of the total sales of recorded music in 1999 , and 20.4% of the total sales of recorded music in 2009 . Find the average rate of change of the percentage of sales of rock music from 1999 to 2009 .
Round to the nearest hundredth of a percent. Note that the percentage sign is already given in the answer, so you do not need to enter it.
The average rate of change is .
mathsucksalot123
 4 years ago
Rock music accounted for 30.5% of the total sales of recorded music in 1999 , and 20.4% of the total sales of recorded music in 2009 . Find the average rate of change of the percentage of sales of rock music from 1999 to 2009 . Round to the nearest hundredth of a percent. Note that the percentage sign is already given in the answer, so you do not need to enter it. The average rate of change is .

This Question is Closed

helpingtutors
 4 years ago
Best ResponseYou've already chosen the best response.0(30.5  20.4)/10 = 10.1/10 = 1.01

mathsucksalot123
 4 years ago
Best ResponseYou've already chosen the best response.0i tried that. it says its wrong :(

satellite73
 4 years ago
Best ResponseYou've already chosen the best response.1that is because your answer should be negative. sales declined over the ten year period

satellite73
 4 years ago
Best ResponseYou've already chosen the best response.1\[\frac{30.520.4}{19992009}=\frac{10.1}{10}\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.