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?
Here is what is in the VENN DIAGRAM:
There are 11 in the Band section
17 in the Choir section
7 in the Band AND Math section
And 3 in the Math, Band, and Choir section
I really need help!!!!
Ms. Sue can you help if you have time?
I can help you
To determine how many students take exactly 2 classes from Mr. Green, we need to use the information given in the Venn diagram.
First, add up the number of students in each section of the Venn diagram:
- Band section: 11 students
- Choir section: 17 students
- Band AND Math section: 7 students
- Math, Band, and Choir section: 3 students
Next, we can calculate the number of students who take exactly 2 classes by adding the number of students in the Band AND Math section and the Math, Band, and Choir section, since these students are taking two classes with Mr. Green.
So, the number of students taking exactly 2 classes from Mr. Green is:
7 (from Band AND Math section) + 3 (from Math, Band, and Choir section) = 10 students
Therefore, 10 students take exactly 2 classes from Mr. Green.
band alone 11
choir alone 17
band and choir alone 4
band and math alone 7
math and choir alone 6
band choir and math 3
math alone 9 from 11+4+10+6+17 + M = 57
so
2 classes = 4+7+6 = 17
17 students take exactly two classes with 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