Answer:
Step-by-step explanation:
<u>Use the ratio of corresponding sides of similar triangles:</u>
- 81 / x = x / 144
- x² = 81*144
- x =

- x = 9*12
- x = 108
Answer:
4 students
Step-by-step explanation:
The total number of students is given by:

Where N is the total number of students, A is the number of students that have taken Math 2A, B is the number of students that have taken Math 2B, and C is the number of students that have taken Math 2C:

4 students in Group A have taken all three classes.
*The number of students that have taken two classes has be subtracted so those students do not get counted twice
Answer:
B.
Step-by-step explanation:
Answer:
6774.075
Step-by-step explanation:
1984: 8855
1983: 8855*10/100=885.5
8855-885.5
7969.5
1982
7969.5*15/100=1195.425
7969.5-1195.425
6774.075
The answers are choice A) and choice C). They effectively say the same thing but in a slightly different way. Choice A is more algebraic while choice C is more visual.