Answer:
16
Step-by-step explanation:
ratio is 5:4:1
David: Malachy: Paul
David gets 20 (that is 4 times more than the original ration. so need to multiply everything by 4)
4*4=16
1*4=4
new ration- 20:16:4
So David gets 20
Malachy gets 16
Paul gets 4
Since this is a combination not a permutation problem, (order does not matter) you should use the "n choose k" formula.
C=n!/(k!(n-k)!) where C is the number of unique combinations, n equals the total number of possible choices and k equals the specific number of choices. In this case:
C=9!/(4!(9-4)!)
C=9!/(4!5!)
C=362880/(24*120)
C=362880/2880
C=126
So there are 126 unique ways to pick 4 people from a group of 9 people.
Y = -5x - 1
I think that is correct
Answer:
c is true
Step-by-step explanation:
Answer:
1c, 5c, 25c and 1 dollar
Step-by-step explanation:
With 4 coins of 1c : 4 cents
4 coins of 5c: 20 cents
4 coins of 25c: 1 dollar
4 coins of 1 dollar: 4 dollars
So, 4c + 20c + 1 dollar + 4 dollars = 5.24 dollars