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iris [78.8K]
3 years ago
15

The owners of a waterpark are taking a survey to determine how many trips to the park kids in the area take during the summer. t

hey take a survey of kids entering the park on a monday. is this a good sampling method?
Mathematics
1 answer:
sammy [17]3 years ago
3 0
No, it is not because of the day of the week. Many children are less likely to go to the water park on a weekday because they have to go to school. It would be a better sampling method to go over the weekend and take a survey, so that it simulates the summer, where children have more personal time.
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Let us say that:

x = hours worked by Wolfgang

y = hours worked by Heinrich

 

So that:

x = y + 10

14 x + 12 y = 3520

 

By combining the two equations:

14 (y + 10) + 12 y = 3520

14 y + 140 + 12 y = 3520

26 y = 3380

y = 130 hours

x = y + 10 = 140 hours

 

<span>So Wolfgang worked 140 hours while Heinrich worked 130 hours.</span>

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Step-by-step explanation:

b√a

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Answer:

Step-by-step explanation:

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Step-by-step explanation:

To solve, multiply your length by your width.

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