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Mila [183]
3 years ago
8

Erin needs to save a total of $150, she already has $80. What is the fewest number of hours she will need to work if she earns $

15 an hour?
Mathematics
1 answer:
harkovskaia [24]3 years ago
8 0
80 divided by 15 Is =5.333333 which I don’t know how to round it but it would be around 5 at least
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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

2) Number of different teams with 2 boys and 2 girls = ways of chosing 2 boys * ways of chosing 2 girls

Ways of chosing 2 boys = 6*5/2 = 15
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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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3 years ago
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ludmilkaskok [199]
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goblinko [34]

Answer:

I believe both are 80 or 40

Step-by-step explanation:

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Step-by-step explanation:


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