Answer:
$13.60
Step By Step:
A nickle is worth 5 cents.
A dime is worth 10 cents.
A quarter is worth 25 cents.
5 Cents • 90 Nickles = 450
10 Cents • 16 Dimes = 160
25 Cents • 16 Quarters = 400
50 Cents • 7 fifty-cent pieces = 350
450 + 160 + 400 + 350 = 1360
A dollar is worth 100 cents.
1360 ÷ 100 = $13.60
You can choose from 20 students for the first student, 19 for the second, 18 for the third, ..., 14 for the seventh student.
That gives you 20 * 19 * 18 * 17 * 16 * 15 * 14.
That number would allow you to write the students in different order. Since order here does not matter, any group with the same students in any order is the same group, you need to divide by the number of way you can order 7 items. Divide by 7 * 6 * 5 * 4 * 3 * 2 * 1
(20 * 19 * 18 * 17 * 16 * 15 * 14)/(7 * 6 * 5 * 4 * 3 * 2 * 1) = 77,520
Answer: 77,520
Answer:
1350 grains
Step-by-step explanation:
Since he needs 450 grains for 6 people, he would need three times that for three times the amount of people.
Therefore, for 
people, he would need 
grains.
Answer:x=16.5
Step-by-step explanation:
22divided by 4 is 5.5
5.5 times 3 is 16.5
