2 years ago

Each of the following correctly match an English phrase with a mathematical expression except

Mathematics

1 answer:

Neporo4naja [7]2 years ago

3 0

Answer:

a number divided by 7=x÷7

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Fermium-253 has a half life of three days. A sample contains 400 g. How long will it take for the sample to decay to 100 g?

NemiM [27]

After the first three days, the sample size will be half of the initial; therefore, 400g/2= 200g. However, it is asking how long will it take to decay to 100g, so we will take 200g/2= 100g, which will take another three days. It will take 2 half-lives, which will encompass 6 days.

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2 years ago

Can anyone solve this correctly?

andrew-mc [135]

Answer:

A. $200.96 \: {ft}^{2}$