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Dmitrij [34]
3 years ago
9

In 1989, Dutch ice skater Dries van Wijhe skated 200 km at an average speed of 35.27 km/h. How long was he skating? Use the form

ula d = rt, where d is the distance in km, r is the rate in km/h, and t is the time in hours.
Mathematics
2 answers:
skelet666 [1.2K]3 years ago
8 0
Divide 35.72 on all sides
5.670542
katrin [286]3 years ago
5 0
200=35.27t
 Divide 35.72 on both sides 
t=<span>5.670542</span>
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2 years ago
An NFL coach sometimes uses a defense that utilizes 3 defensive linemen, 4 linebackers, and 4 defensive backs. His roster (the p
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Answer:

68,600

Step-by-step explanation:

The order of the players is not important. For example, a defensive line of Shaq Lawson, Ed Oliver and Jerry Hughes is the same as a defensive line of Ed Oliver, Shaq Lawson and Jerry Hughes. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

Defensive Lineman:

3 from a set of 8. So

C_{8,3} = \frac{8!}{3!5!} = 56

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4 from a set of 7. So

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Defensive backs:

4 from a set of 7. So

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How many different ways can the coach pick the 11 players to implement this particular defense?

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68,600 different ways can the coach pick the 11 players to implement this particular defense

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3 years ago
Read 2 more answers
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max2010maxim [7]
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