19.

Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 48 students who take either band or choir or both. There are 9 students who take both math and choir with Mr. Green. Use the Venn diagram below:

a. How many students take exactly 2 classes from Mr.Green?

I think 17 take only to classess

actually what HJsimpson is wrong for all of them.

HJsimpson is foul.

ACTUALLY i don't know if its 17.. I really need help working this out!!

How is the answer 17?

Yeah imma fail this test i just went through pressing random answers 💀

To determine the number of students who take exactly 2 classes from Mr. Green, we need to use the information given in the Venn diagram.

From the given information, we know that there are 57 students who take at least one of Mr. Green's classes, and 25 students take band. Therefore, the number of students who take choir only can be found by subtracting the number of students who take both band and choir (since they are counted in both categories) from the total number of students taking choir.

So, the number of students taking only choir = Total number of students taking choir - Number of students taking both band and choir = (Total number of students taking choir + students taking both band and choir) - students taking both band and choir

Let's do the calculations:

Number of students taking only choir = (48 + 9) - 9 = 48

Now we have the number of students taking only choir (48) and the number of students taking both band and choir (9). To find the number of students who take exactly two classes (band and choir), we add these two numbers:

Number of students taking exactly 2 classes = Number of students taking only choir + Number of students taking both band and choir = 48 + 9 = 57

Therefore, there are 57 students who take exactly 2 classes from Mr. Green.

18) You can make a stem-and-leaf plot as frequency table for "The chart below shows the average number of movies seen per person in selected countries. "

0 / . 5
1 / . 2 , . 3 , .3 , . 5
2 / . 2 , . 2 , . 2
3 / 0 , 0
4 / .5

19.) Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of his classes. He teaches band to 25 students. There are 9 students who have Mr. Green for math and nothing else. Use the Venn diagram below: How many students take exactly 2 classes with Mr. Green?

Answer: 26 students take exactly 2 classes check the work below.
25 - ( 7 + 3 + 11) Use order of operations or pemdas
25 - ( 21 ) = 4 ** students who take both Band and Choir

Add 11 + 7 + 3 + 4 + 17 + 9 = 51

Subtract 57 - 42 = 15***Students take Math and Choir

Add 15 + 4 + 7 , these are the sections in the Venn Diagram where two circles share the same space.

15 + 4 + 7 = 26 ***** ANSWER

26 students take exactly two classes.

20.) Another stem-and-leaf plot problem.
| Percentage of
Countries | Households with Color Television

9| 3
6| 9
9| 5
8| 8
9| 4
6| 4
9| 2
8| 8
1| 00
9| 1
9| 7