If 9 is 30 percent just divide by 3 so 10 percent is 3 stamps, 3×10 is 30 so 30 is the total.
Answer:
1/100
Step-by-step explanation:
7 in 3.47 is 7/100
7 in 7.34 is 7
so the first 7 is 1/100 times the value of 7
Solution
The counselor has 12 electives courses (e.g. art, band, PE, etc.) to choose from and must select 2 ordered classes for each 6th grade student.
Let S be the sample space.
Then, n(S) = 12C2 = (12 x 11) ÷ (2 x 1 ) = 132 ÷ 2 = 66
Sixty six (66) ways can the counselor arrange the last 2 periods of the day for the 6th grade students