Which of the following is a proportion? 3/4=12/15 8/10=6/8 6/9=8/12 4/6=9/12

Mathematics

2 answers:

ad-work [718]4 years ago

6 0

The answer is 6/9 =8/12 i think bro

Vinil7 [7]4 years ago

6 0

<h2>You didn't have to delete it. I tried answering your question in the box, but it didn't work. Our world is already broken because of people with egos like yours. Everyday you are given breathe, and at least you should choose to use that breathe wisely because any second this whole world can be taken away from you. So, all I ask is please be kind.</h2>

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A survey of 73 college students was taken to determine the musical styles they liked. Of those, 27 students listened to rock,

vovangra [49]

Attached is a Venn diagram of your problem.

Knowing how many likes all three will help. You know that 10 students like all three.

Rock and Jazz only:
16 like rock and jazz while 10 like all three. To get how many like jazz only, subtract 10 from 16.

16-10 = 6

Rock and Classical only:
13 like rock and classical while 10 like all three. To get how many like jazz only, subtract 10 from 13.

13-10 = 3

Jazz and classical only:
12 like jazz and classical while 10 like all three. To get how many like jazz only, subtract 10 from 12.

12-10 = 2

Now with that data you fill up the 4 intersecting areas. To get the outer, just remember that all areas within a circle should add up to the first assumption.
27 rock
24 classical
28 Jazz

All numbers in the rock circle should add up to 27.
All numbers in the classical circle should add up to 24.
All numbers in the Jazz circle should add up to 28.

Rock:
3+10+6+x = 27
19+x=27
x = 27-19
x= 8

Classical:
3+10+2+x = 24
15 + x = 24
x = 24-15
x = 9

Jazz:
10+6+2+x = 28
18 + x = 28
x = 28 - 18
x = 10

In summary: 8 liked only Rock, 9 liked only Classical, 10 liked only Jazz.