Answer:
66
Step-by-step explanation:
If there are <em>n</em> students, then the number of pairs is
.
With 12 students,
pairs can be formed.
The reason the formula works is this: Each of the 12 students can be paired with 11 other students (no student is paired with him/her self). But counting 12 x 11 = 132 counts each pair <u>twice</u>. Example: student A can be paired with student B,..., student B can be paired with student A. The pair was counted two times.
See the attached image that shows pairings of 5 students. There are
5(5 - 1)/2 = 5(4)/2 = 10 pairs.
Answer:
yes you did that correctly
Answer:
B. if you produce more items, you are paid more
Step-by-step explanation:
Hourly wages are significantly less paid wages than salary, however, hourly wages are benefit for those worker who are getting higher hourly wages and they are doing consistent overtime work. As Hourly wages are paid on the number of hours worker work, where number hours and production matter a lot for getting higher wages, however, salary are paid even for non working hours. Hourly wages are beneficial for employer in terms of cost of worker and productivity.
Answer:
All of the following statements are true because the products, three or four numbers, remain the same regardless of how the numbers are grouped.