Answer:
3
Step-by-step explanation:
its 3!!!
The domain would be D. The number of minutes the student studied.
The equation to calculate how many ways that "r" things can be chosen from a larger set of "n" things is:n! / [r! * (n-r)!] =
12! / (5! * 7!) =
12 * 11 * 10 * 9 * 8 * 7! / (5! * 7!) =12 * 11 * 10 * 9 * 8 / 5 * 4 * 3 * 2 =11 * 9 * 8 =792 ways
http://www.1728.org/combinat.htm
Answer:
12/5
Step-by-step explanation:
10.50 x 0.2 = $2.10
Therefore, 20% of $10.50 is $2.10
With 20% off, the book will cost
10.50-2.10 = $8.40