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monitta
3 years ago
13

How many ways are there to select 7 countries in the United Nations to serve on a council if 3 is selected from a block of 54, 2

are selected from a block of 69 and 2 are selected from the remaining 66 countries?
Mathematics
1 answer:
MArishka [77]3 years ago
6 0

Answer:

(54C3) + (69C2) + (66C2) = 29295

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What is the value of x in the equation 1/5 x-2/3y = 30, when y = 15?
Svetllana [295]

Answer:

The value of x is 200 in the equation 1/5x - 2/3y = 30, when y = 15

Step-by-step explanation:

<u>Given</u>

equation: x - 2/3y = 30

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<em>Plug in y:</em>

1/5x - 2/3(15) = 30

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<em>add</em> 10 to both sides,

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<em>multiply</em> both sides by 5

1/5x * 5= 40 * 5

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2 years ago
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87

Step-by-step explanation:

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Suppose that P(A) = 0.25 and P(B) = 0.40 . If P(A|B)=0.20 , what is P(B|A) ?
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<u>Use of formula:</u>

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