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3 years ago

Pls, help me it has been a missing assignment for too long :/

Mathematics

1 answer:

Natasha2012 [34]3 years ago

3 0

Answer:

Snail A: 0, 5, 10, 15, 20, 25, 30

Snail A travels at a rate of 30 inches in 1 hour or 30 inches per hour.

Snail B: 0, 3, 6, 9, 12, 15, 18

Snail B travels at a rate of 18 inches in 1 hour or 18 inches per hour.

Snail C: 0, 6, 12, 18, 24, 30, 36

Snail C travels at a rate of 36 inches in 1 hour or 36 inches per hour.

Snail D: 0, 4, 8, 12, 16, 20, 24

Snail D travels at a rate of 24 inches in 1 hour or 24 inches per hour.

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3 years ago

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2 years ago

There are 2 Senators from each of 50 states. We wish to make a 3-Senator committee in which no two members are from the same sta

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Answer:

a) rCn = 1176

b) 2352

Step-by-step explanation:

a)Each committee should be formed with 3 members ( no two members could be of the same state) then

Let´s fix a senator for any of the 50 states so in the new condition we need to combined 49 senators in groups of 2 then

rCn = n! / (n - r )! *r!

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So we can choose in 1176 different ways a senator for a given state

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3 years ago