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fredd [130]
3 years ago
11

(3x^3 + 2x^2 - 2) + (x^2 + 5x - 6)

Mathematics
1 answer:
Alecsey [184]3 years ago
8 0

Answer:

3x^3+3x^2+5x-8

Step-by-step explanation:

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A school debate team has four girls and six boys. A total of four of the team members will be chosen to participate in the distr
alex41 [277]
Procedure:

1) calculate the number of diferent teams of four members that can be formed (with the ten persons)
2) calculate the number of teams tha meet the specification (two girls and two boys)
3) Divide the positive events by the total number of events: this is the result of 2) by the result in 1)

Solution

1) the number of teams of four members that can be formed are:

10*9*8*7 / (4*3*2*1) = 210

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Number of different teams with 2 boys and 2 girls = 15 * 6 = 90

3) probability of choosing one of the 90 teams formed by 2 boys and 2 girls:

90/210 = 3/7
 
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