Question

One geometry question! Please help!

A. What percent of the total is each type of music?

I'll post a picture of the types of music.

Answer 1

@dan815
@Preetha
@Michele_Laino

Answer 2

@Michele_Laino can you help?

Answer 3

total, is:
3150+1800+2250+1350+450=...?

Answer 4

9000

Answer 5

that's right!

Answer 6

now, the percentage of rock music is:
(3150/9000) * 100=...?

Answer 7

35%

Answer 8

Wait, do I just have to take each type of music, divide how much they made by 9000 and multply it by 100 to get the percentage?

Answer 9

ok! Now
percentage of country music, is:
(1800/9000)*100=...?

Answer 10

20%

Answer 11

yes! that's right!

Answer 12

I can do the rest of them now! Thank you so much!!!!

Answer 13

Can yo help me with one more thing? I just want to see if I'm doing this formula right

Answer 14

you*

Answer 15

ok!

Answer 16

So I have to find the measure of the central angle on a circle graph and it says I need to multiply the percentage of one part of the graph(say there graph is measuring how many people like basketball, tennis, and soccer) by 360. Basketball is 31%, would all I have to do is multiply 31 by 360?
This is 11160. Would that be the central angle??

Answer 17

@Michele_Laino

Answer 18

I think that you ahve to solve this proportion:
\[31:100 = x:360\]
where x is your central angle.
So, Applying the fundamental property of proportion, I get:
\[\Large x = \frac{{31 \times 360}}{{100}} = 111.6\;{\text{degree}}\]

Answer 19

have*

Answer 20

Oh, so let me try one.
If tennis was 80% then it would be:
x=80x360/100=288

Answer 21

yes! that's right!

Answer 22

Okay! I get it now. Thank you!!

Answer 23

Thank you!!