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iVinArrow [24]
2 years ago
15

115) Working alone, it takes Sebastian nine hours to

Mathematics
1 answer:
Elden [556K]2 years ago
6 0

It will take them 20 hours, since the question is asking how long it will take them when working together you add each of their hours together,9+11=20

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I am answering the question assuming that you meant that the height was 13 1/2 feet.

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klasskru [66]

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|3x+12|

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