Mathematics: One beaver can chew though a tree that is 15 cm thick in 20 min if it works at the same pase how long will it tack one beaver to cut down enough trees to create a stack 1.2 meters tall

One beaver can chew though a tree that is 15

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alanisalvarez2000

26.05.2020

It takes 8 trees to make a stack 1.2 metres tall, so if ut takes 20 minutes per tree, then it will take 8 × 20 or 160 minutes, or 2 hours 40 minutes.

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Ответ:

Redeyestudio53

21.01.2021

Mathematics

The perimeter of a rectangle is 2W + 2L.
P = 2W + 2L
128 = 2(4y) + 2L = 8y + 2L
2L = 128 - 8y
L = 64 - 4y (this is the answer)

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One beaver can chew though a tree that is 15 cm thick in 20 min if it works at the same pase how long will it tack one beaver to cut down enough trees to create a stack 1.2 meters tall

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