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2 years ago

12) Twenty cubic feet of marble can weigh 3400 pounds, plus or minus 100

Mathematics

1 answer:

andrezito [222]2 years ago

4 0

Answer:

Let's suppose that one cubic foot of marble is x.

20x = 3400

But because the weight has a range of +-100, then 20x is between 3300 and 3500. Write it like this:

3300<20x<3500

Divide by 20:

165<x<175

The meaning of this is that one cubic foot of marble weight between 165 and 175 pounds

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Answer:

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We have:

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Then:

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